The SPARCbook is a line of laptop computers based on SPARC

SPARC

SPARC is a RISC instruction set architecture developed by Sun Microsystems and introduced in mid-1987....

 microprocessors produced by Tadpole Computer

Tadpole Computer

Tadpole Computer is a manufacturer of rugged UNIX workstations and thin client laptops and lightweight servers. Tadpole is based in Cupertino, California.- Products :...

 (now General Dynamics

General Dynamics

General Dynamics Corporation is a U.S. defense conglomerate formed by mergers and divestitures, and as of 2008 it is the fifth largest defense contractor in the world. Its headquarters are in West Falls Church , unincorporated Fairfax County, Virginia, in the Falls Church area.The company has...

).

These machines are compatible with other SPARC-based systems from Sun Microsystems

Sun Microsystems

Sun Microsystems, Inc. was a company that sold :computers, computer components, :computer software, and :information technology services. Sun was founded on February 24, 1982...

 and can run the Solaris operating system.
The latest machine details (2008) are:

• 650 MHz UltraSPARC-IIi processors
• One or two removable disk drives (up to 200 GB hard disk drive capacity) provide:
  • Redundancy
  • Ability to partition data and applications on separate disks
  • Option to build multiple operating environments on swappable disks
  • Security in military applications
• Dual networking ports
• Low profile and light weight
• 4 GB of DRAM
• Read-write CD-ROM and DVD combo drive
• 15" TFT LCD (up to 1400 x 1050)
• Extensive interfaces & PCCard/PCMCIA support
• SPARCbooks come pre-installed with the Solaris Operating Environment and StarOffice
  StarOffice
  StarOffice, known briefly as Oracle Open Office before its discontinuation in 2010, is a proprietary office suite. It was originally developed by StarDivision which was acquired by Sun Microsystems in 1999...
  
  7.0.

The first Tadpole machine was called the SparcBook1
and was introduced in 1992.
Specs were:

• 8-32 MB RAM
• 85-240 MB hard drive
• floppy drive
• gray-scale or color 640x480 monitor
• 25 MHz CY601 integer processor, 25 MHz CY604 floating point processor
• Ethernet port
• internal 9600/2400 fax/modem
• SunOS operating system (pre Solaris)
• Size 12 x 8.5 x 2 inches
• Weight 7 pounds 1 ounce
• Price was US$ 4,950 - 14,850 and around GBP 4,000 - 12,000

Other SPARC/UltraSPARC based models are:

• SPARCbook 5000 & 6500
• SPARCLE 440, 500 & 650
• Ultrabook
• Ultrabook LE
• Ultrabook IIe
• Ultrabook IIi
• Voyager IIi

Weblinks

• Looking back at the SPARC Portables and Notebook market (Article at the SPARC Product Directory)
• The SPARCBook Archives (at sunhelp)