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Computers
In The Beginning
Acorn BBC Model B
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Acorn BBC Model B [Acorn User] [The Micro User]. The casing is approximately 15.75 inces wide, 19.69 inches deep and 3.94 inches high. Based on the 6502A microprocessor, by Motorola, which runs at 2 MHz, it boots to a simple operating system and is indeed lightning-fast. It comes with 32K of RAM memory and a 32K ROM, a full QWERTY keyboard with 10 user-definable function keys, firmly attached to the casing and needs a separate monitor since it can't be connected to a TV set, supports color and sound and can save programs and data either on a cassette tape, or on 5.25 inch diskettes.
Mixed high resolution graphics and uppper and lower case text. 300 baud and 1200 baud interface for standard cassette recorders. Three-voice music synthesis with full envelope control feeding internal loudspeaker. Interface sockets: RS423 for analog inputs, centronics and user port. 6502, Z80, 16032 second processors. Single and Dual Disc Drives with 100 and 800 K-bytes storage. Teletext unit. Speech synthesis. Networking facility via Acorn Econet. Sophisticated version of BASIC, however, there is also a facility allowing access through a simple command to another language; for example PASCAL, FORTH and LISP. A decent BASIC editor is already available as part of the operating system, but if you are a BASIC programmer who wants to perform miracles, you can always by a separate BASIC Editor ROM.
Acorn BBC Model B
06-04-2004