Roland MC-8 Microcomposer
Overview
 
The Roland MC-8 MicroComposer by the Roland Corporation
Roland Corporation
is a Japanese manufacturer of electronic musical instruments, electronic equipment and software. It was founded by Ikutaro Kakehashi in Osaka on April 18, 1972, with ¥33 million in capital. In 2005 Roland's headquarters relocated to Hamamatsu in Shizuoka Prefecture. Today it has factories in Japan,...

, introduced in 1977 at a price of around US$8,000, was one of the earliest stand-alone microprocessor
Microprocessor
A microprocessor incorporates the functions of a computer's central processing unit on a single integrated circuit, or at most a few integrated circuits. It is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and...

-driven CV/Gate
CV/Gate
CV/Gate is an analog method of controlling synthesizers, drum machines and other similar equipment with external sequencers. The Control Voltage typically controls pitch and the Gate signal controls note on/off....

 music sequencer
Music sequencer
The music sequencer is a device or computer software to record, edit, play back the music, by handling note and performance information in several forms, typically :...

, following EMS Sequencer 256 in 1971 and New England Digital
New England Digital
New England Digital Corp. , founded originally in Norwich, Vermont and eventually relocated to White River Junction, Vermont, was best known for its signature product, the Synclavier Synthesizer System, which evolved into the Synclavier Digital Audio System or "Tapeless Studio." The company sold...

's ABLE computer (microprocessor) in 1975. Roland called the MC-8 a "computer music
Computer music
Computer music is a term that was originally used within academia to describe a field of study relating to the applications of computing technology in music composition; particularly that stemming from the Western art music tradition...

 composer" and it was considered revolutionary at the time, introducing features such as a keypad
Keypad
A keypad is a set of buttons arranged in a block or "pad" which usually bear digits, symbols and usually a complete set of alphabetical letters. If it mostly contains numbers then it can also be called a numeric keypad...

 to enter note
Note
In music, the term note has two primary meanings:#A sign used in musical notation to represent the relative duration and pitch of a sound;#A pitched sound itself....

 information and 16 kilobyte
Kilobyte
The kilobyte is a multiple of the unit byte for digital information. Although the prefix kilo- means 1000, the term kilobyte and symbol KB have historically been used to refer to either 1024 bytes or 1000 bytes, dependent upon context, in the fields of computer science and information...

s of random access memory which allowed a maximum sequence length of 5200 notes, a huge step forward from the 8-16 step sequencers at the time.
 
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