Casio Cassiopeia was the brand name of a PDA

Personal digital assistant

A personal digital assistant , also known as a palmtop computer, or personal data assistant, is a mobile device that functions as a personal information manager. Current PDAs often have the ability to connect to the Internet...

 manufactured by Casio

Casio

is a multinational electronic devices manufacturing company founded in 1946, with its headquarters in Shibuya, Tokyo, Japan. Casio is best known for its electronic products, such as calculators, audio equipment, PDAs, cameras, musical instruments, and watches...

. It used Windows CE

Windows CE

Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...

 as the Operating system

Operating system

An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...

. Casio was one of the first manufacturers of PDAs, developing at the beginning small pocket-sized computers with keyboards and grayscale displays and subsequently moving to smaller units in response to customer demand.

Cassiopeia A-10 and A-11

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   Windows CE
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   1.0 Handheld PC edition
• Size: 175 mm x 92 mm x 26.5 mm :: 380 g
• CPU: Hitachi SH3 @ 44 MHz
• Memory: RAM 2 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 4 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : FSTN LCD
  Liquid crystal display
  A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....
  
  , 480 x 240 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 4 shades of gray
• Interface
  User interface
  The user interface, in the industrial design field of human–machine interaction, is the space where interaction between humans and machines occurs. The goal of interaction between a human and a machine at the user interface is effective operation and control of the machine, and feedback from the...
  
  : Serial and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.0)
• Expansion slot: PC card
  PC card
  In computing, PC Card is the form factor of a peripheral interface designed for laptop computers. The PC Card standard was defined and developed by the Personal Computer Memory Card International Association which itself was created by a number of computer industry companies in the United States...
  
   Type II
• Battery: 2x AA, up to 20 hours of running time; CR2032 for memory protection
• Input: Keyboard
  Computer keyboard
  In computing, a keyboard is a typewriter-style keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches...
  
   and Touch Screen
• Extras: Speaker

Cassiopeia A-20

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   Windows CE
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   2.0 Handheld PC edition
• Size: 185 mm x 94 mm x 24.5 mm :: 430 g
• CPU: Hitachi SH3 @ 80 MHz
• Memory: RAM 8 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 8 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : FSTN LCD
  Liquid crystal display
  A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....
  
  , 640 x 240 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 4 shades of gray
• Interface
  Interface (computer science)
  In the field of computer science, an interface is a tool and concept that refers to a point of interaction between components, and is applicable at the level of both hardware and software...
  
  : Serial and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.0)
• Expansion slots: CompactFlash
  CompactFlash
  CompactFlash is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994...
  
   Type I and PC card
  PC card
  In computing, PC Card is the form factor of a peripheral interface designed for laptop computers. The PC Card standard was defined and developed by the Personal Computer Memory Card International Association which itself was created by a number of computer industry companies in the United States...
  
   Type II
• Battery: 2x AA, up to 25 hours of running time; CR2032 for memory protection
• Input: Keyboard
  Computer keyboard
  In computing, a keyboard is a typewriter-style keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches...
  
   and Touch Screen
• Extras: Speaker, Microphone

It was quickly discovered that most consumers wanted smaller devices, so the Palm-size PCs were developed. Japanese models of these units differ in both model number as well as appearance. The E-5x and/or E-5xx models are Japanese versions, colored blue instead of silver.

Cassiopeia E-10

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   Windows CE
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   2.01 Palm-size PC edition
• Size: 80 mm x 120 mm x 20 mm :: 184 g
• CPU: NEC VR4111 MIPS
  MIPS architecture
  MIPS is a reduced instruction set computer instruction set architecture developed by MIPS Technologies . The early MIPS architectures were 32-bit, and later versions were 64-bit...
  
   @ 69 MHz
• Memory: RAM 4 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 8 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : FSTN LCD
  Liquid crystal display
  A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....
  
  , 240 x 320 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 4 shades of gray
• Interface
  Interface (computer science)
  In the field of computer science, an interface is a tool and concept that refers to a point of interaction between components, and is applicable at the level of both hardware and software...
  
  : Serial and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.0)
• Expansion slots: CompactFlash
  CompactFlash
  CompactFlash is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994...
  
   Type I and II
• Battery 2x AAA, up to 25 hours of running time; CR2016 for memory protection
• Input: Touch Screen, Microphone, 4 user-configurable buttons and a control pad
• Extras: Speaker and Stereo 3.5 mm headphone jack

Cassiopeia E-11

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   Windows CE
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   2.01 Palm-size PC edition
• Size: 80 mm x 120 mm x 20 mm :: 184 g
• CPU: NEC VR4111 MIPS
  MIPS architecture
  MIPS is a reduced instruction set computer instruction set architecture developed by MIPS Technologies . The early MIPS architectures were 32-bit, and later versions were 64-bit...
  
   @ 69 MHz
• Memory: RAM 8 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 8 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : FSTN LCD
  Liquid crystal display
  A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....
  
  , 240 x 320 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 4 shades of gray
• Interface
  Interface (computer science)
  In the field of computer science, an interface is a tool and concept that refers to a point of interaction between components, and is applicable at the level of both hardware and software...
  
  : Serial and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.0)
• Expansion slots: CompactFlash
  CompactFlash
  CompactFlash is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994...
  
   Type I and II
• Battery 2x AAA, up to 25 hours of running time; CR2016 for memory protection
• Input: Touch Screen, Microphone, 4 user-configurable buttons and a control pad
• Extras: Speaker and Stereo 3.5 mm headphone jack

Cassiopeia E-15

The Cassiopeia E-15 was the last model of Palm-size PC Casio introduced that used a grayscale display. It appeared at the same time as the E-105, and functioned identically to that device, except for the screen.

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   Windows CE
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   2.11 Palm-size PC edition
• Size: 127 mm x 80 mm x 15.2 mm :: 190 g
• CPU: NEC VR4111 MIPS
  MIPS architecture
  MIPS is a reduced instruction set computer instruction set architecture developed by MIPS Technologies . The early MIPS architectures were 32-bit, and later versions were 64-bit...
  
   @ 69 MHz
• Memory: RAM 16 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 16 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : FSTN LCD
  Liquid crystal display
  A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....
  
  , 240 x 320 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 16 shades of gray
• Interface
  Interface (computer science)
  In the field of computer science, an interface is a tool and concept that refers to a point of interaction between components, and is applicable at the level of both hardware and software...
  
  : Serial and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.0)
• Expansion slots: CompactFlash
  CompactFlash
  CompactFlash is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994...
  
   Type I and II
• Battery 2x AAA rechargeable
  Battery (electricity)
  An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power...
  
  , up to 25 hours of running time; CR2032 for memory protection
• Input: Touch Screen, Microphone, 3 user-configurable buttons, a control pad
• Extras: Speaker and Stereo 3.5 mm headphone jack

Cassiopeia E-100

The first Palm-size PC model by Casio to have a color screen, the E-100 was outwardly identical to the E-15.

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   Windows CE
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   2.11 Palm-size PC edition
• Size: 81.2 mm x 132 mm x 20.1 mm :: 255 g
• CPU: NEC VR4121 MIPS
  MIPS architecture
  MIPS is a reduced instruction set computer instruction set architecture developed by MIPS Technologies . The early MIPS architectures were 32-bit, and later versions were 64-bit...
  
   @ 131 MHz
• Memory: RAM 16 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 16 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : HAST LCD
  Liquid crystal display
  A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....
  
  , 240 x 320 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 65536 colors
• Interface
  Interface (computer science)
  In the field of computer science, an interface is a tool and concept that refers to a point of interaction between components, and is applicable at the level of both hardware and software...
  
  : Serial and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.0)
• Expansion slots: CompactFlash
  CompactFlash
  CompactFlash is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994...
  
   Type I and II
• Battery: Li-Ion rechargeable
  Battery (electricity)
  An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power...
  
  , up to 6 hours of running time; CR2032 for memory protection
• Input: Touch Screen, Microphone, 3 user-configurable buttons, a control pad.
• Extras: Speaker and Stereo 3.5 mm headphone jack

Cassiopeia E-105

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   Windows CE
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   2.11 Palm-size PC edition
• Size: 81.2 mm x 132 mm x 20.1 mm :: 255 g
• CPU: NEC VR4121 MIPS
  MIPS architecture
  MIPS is a reduced instruction set computer instruction set architecture developed by MIPS Technologies . The early MIPS architectures were 32-bit, and later versions were 64-bit...
  
   @ 131 MHz
• Memory: RAM 32 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 16 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : HAST LCD
  Liquid crystal display
  A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....
  
  , 240 x 320 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 65536 colors
• Interface
  Interface (computer science)
  In the field of computer science, an interface is a tool and concept that refers to a point of interaction between components, and is applicable at the level of both hardware and software...
  
  : Serial and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.0)
• Expansion slots: CompactFlash
  CompactFlash
  CompactFlash is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994...
  
   Type I and II
• Battery: Li-Ion rechargeable
  Battery (electricity)
  An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power...
  
  , up to 6 hours of running time; CR2032 for memory protection
• Input: Touch Screen, Microphone, 3 user-configurable buttons, a control pad.
• Extras: Speaker and Stereo 3.5 mm headphone jack

Cassiopeia E-115

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   Windows CE
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   3.0 PocketPC edition
• Size: 81.2 mm x 132 mm x 20.1 mm :: 256 g
• CPU: NEC VR4121 MIPS
  MIPS architecture
  MIPS is a reduced instruction set computer instruction set architecture developed by MIPS Technologies . The early MIPS architectures were 32-bit, and later versions were 64-bit...
  
   @ 131 MHz
• Memory: RAM 32 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 16 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : HAST LCD
  Liquid crystal display
  A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....
  
  , 240 x 320 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 65536 colors
• Interface
  Interface (computer science)
  In the field of computer science, an interface is a tool and concept that refers to a point of interaction between components, and is applicable at the level of both hardware and software...
  
  : Serial and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.2)
• Expansion slots: CompactFlash
  CompactFlash
  CompactFlash is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994...
  
   Type I and II
• Battery: Li-Ion rechargeable
  Battery (electricity)
  An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power...
  
  , up to 6 hours of running time; CR2032 for memory protection
• Input: Touch Screen, Microphone, 3 user-configurable buttons, a control pad.
• Extras: Speaker and Stereo 3.5 mm headphone jack

Casio always advertised the fact that their devices could be updated. Casio decided it would not issue an update for the E-100 and E-105, and a lot of owners of the devices complained. Because of the complaints, Casio offered to update the devices to the newest version of the Operating system

Operating system

An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...

 if the owners sent in the device and paid a fee. Since the operating system was stored in ROM and not flash memory, the only way to upgrade was by replacing the ROM.

Cassiopeia E-125

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   Windows CE
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   3.0 PocketPC edition
• Size: 81.2 mm x 132 mm x 20.1 mm :: 256 g
• CPU: NEC VR4122 MIPS
  MIPS architecture
  MIPS is a reduced instruction set computer instruction set architecture developed by MIPS Technologies . The early MIPS architectures were 32-bit, and later versions were 64-bit...
  
   @ 150 MHz
• Memory: RAM 32 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 16 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : HAST LCD
  Liquid crystal display
  A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....
  
  , 240 x 320 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 65536 colors
• Interface
  Interface (computer science)
  In the field of computer science, an interface is a tool and concept that refers to a point of interaction between components, and is applicable at the level of both hardware and software...
  
  : Serial/USB and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.2)
• Expansion slots: CompactFlash
  CompactFlash
  CompactFlash is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994...
  
   Type I and II
• Battery: Li-Ion rechargeable
  Battery (electricity)
  An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power...
  
  , up to 6 hours of running time; CR2032 for memory protection
• Input: Touch Screen, Microphone, 3 user-configurable buttons, a control pad.
• Extras: Speaker and Stereo 3.5 mm headphone jack

After using the MIPS

MIPS architecture

MIPS is a reduced instruction set computer instruction set architecture developed by MIPS Technologies . The early MIPS architectures were 32-bit, and later versions were 64-bit...

 processor in the E-15 and the E-1xx series devices, the E-200 switched over to the StrongARM

StrongARM

The StrongARM is a family of microprocessors that implemented the ARM V4 instruction set architecture . It was developed by Digital Equipment Corporation and later sold to Intel, who continued to manufacture it before replacing it with the XScale....

 CPU, in keeping with Microsoft

Microsoft

Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...

's specifications.

Cassiopeia E-200

• Operating system
  Operating system
  An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
  
  : Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   PocketPC
  Windows CE
  Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...
  
   2002
• Size: 82 mm x 130 mm x 17.5 mm :: 190 g
• CPU: Intel StrongARM
  StrongARM
  The StrongARM is a family of microprocessors that implemented the ARM V4 instruction set architecture . It was developed by Digital Equipment Corporation and later sold to Intel, who continued to manufacture it before replacing it with the XScale....
  
   1110 @ 206 MHz
• Memory: RAM 64 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
   and ROM 32 MB
  Byte
  The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...
  
  
• Display
  Display device
  A display device is an output device for presentation of information in visual or tactile form...
  
  : TFT, 240 x 320 Pixel
  Pixel
  In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....
  
  , 65536 colors
• Interface
  Interface (computer science)
  In the field of computer science, an interface is a tool and concept that refers to a point of interaction between components, and is applicable at the level of both hardware and software...
  
  : Serial/USB and IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   (ver. 1.2)
• Expansion slots: SD-Card (MultiMediaCard) and CompactFlash
  CompactFlash
  CompactFlash is a mass storage device format used in portable electronic devices. Most CompactFlash devices contain flash memory in a standardized enclosure. The format was first specified and produced by SanDisk in 1994...
  
   Type I and II as well as PC card
  PC card
  In computing, PC Card is the form factor of a peripheral interface designed for laptop computers. The PC Card standard was defined and developed by the Personal Computer Memory Card International Association which itself was created by a number of computer industry companies in the United States...
  
   via an extension module
• Battery: Li-Ion rechargeable
  Battery (electricity)
  An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power...
  
  , up to 12 hours of running time CR2032 for memory protection
• Input: Touch Screen, Microphone, 3 user-configurable buttons, a control pad.
• Extras: Speaker and Stereo 3.5mm headphone jack

Successors of the Cassiopeia E-200

After experiencing difficulties in the market following the release of the E-200, Casio decided not to produce any further units for the US and European markets, instead focusing on the Japanese market. Some Japanese-only models are the Cassiopeia E-3000, using the PocketPC 2002 operating system, and the DT-10 with Windows Mobile 2003.

Other Models

• C120/C140/C120+ are Compaq
  Compaq
  Compaq Computer Corporation is a personal computer company founded in 1982. Once the largest supplier of personal computing systems in the world, Compaq existed as an independent corporation until 2002, when it was acquired for US$25 billion by Hewlett-Packard....
  
   branded equivalents to the Cassiopeia A10/A11/A10+.
• E-55 Japanese version of the E-15
• E-707 Japanese model with wireless/phone antenna and both SD and CF card slots.
• E-5xx Japanese versions of the E-1xx models.
• E-750 Japanese successor to the E-1xx series with 32MB RAM and a 200MHz MIPS CPU.
• EM-500 USA model, slightly smaller than the USA E-1xx with 16MB RAM and came in multiple colors.
• E-700 Japanese version of the EM-500, but with 32MB RAM and came in many additional colors like white, carbon, silver.
• SX-45 designed in cooperation with Siemens
  Siemens AG
  Siemens AG is a German multinational conglomerate company headquartered in Munich, Germany. It is the largest Europe-based electronics and electrical engineering company....
  
  , this is a Cellphone integrated with a E-125.
• BE-300 Pocket Manager (not a Pocket PC) running on Windows CE 3.0 with a Casio-designed user interface. Released in 2001.
• PA-2400W (SH3 80 MHz, 8 MB RAM, 16 MB ROM, 480 x 240 4-level grayscale touchscreen, Windows CE 2.11)
• E-3000/3100 Later Japanese model with 400MHz XSCALE CPU and CF + SD card slots. 3000/3100 ran PPC/CE.NET respectively.