Compukit UK101 (2)
The Compukit UK101 microcomputer (1979) was a kit clone of the Ohio Scientific Superboard II single-board computer, with a few enhancements for the UK market - notably replacing the 24x24 (add guardband kit to give 32x32) screen display with a more useful 48x16 layout working at UK video frequencies. The video output was black and white with 256 characters generated by a 2 KiB ROM. It had no bit-mapped graphics capability. The video was output through a UHF modulator, designed to connect to a TV set.
In common with other home computers of the time, software could be saved and loaded on standard cassette tapes. The UK101 uses the Kansas City standard tape format. I/O was managed by a Motorola 6850 ACIA. This allowed a full RS232 port to be implemented, with the addition of a few extra components and minor modifications to existing jumpers on the board.
The 40 pin expansion socket opened up the world to the UK101. One could attach a dual floppy disk controller (5.5") and a memory expansion card (40K max) to allow faster and reliable save/load of programs/data.
Made in the UK by Compukit in New Barnet, North London, the UK-101 was originally a copy of the Ohio Scientific Superboard II. Two years and various legal battles later the UK-101 became, technically, behind its erstwhile rival.
You could buy the UK101 as a kit or as ready made for an extra fee. The kit came in a cardboard briefcase, in which there were anti-static tubes containing the 65+ ICs, a box of IC sockets, and bags containing passives (mainly 0.1uF ceramic decoupling capacitors) and keyboard bits (the keyboard switches were soldered directly to the PCB).
Our UK101 is mounted in a proprietary box and is complete with the following printed notes:
OSI UK User Group Newsletters:
Compukit UK101 (2) Manuals:
Other Systems Related To Compukit UK101 (2):
This exhibit has a reference ID of CH20372. Please quote this reference ID in any communication with the Centre for Computing History.
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