Back to Home Page |
Notes |
Manufacturer |
Science of Cambridge (UK) |
Model |
Microcomputer Kit 14 (MK14) |
Date Launched |
June 1978 |
Price |
£43 |
Microprocessor type |
National Semiconductor SC/MP 2 @ 4.4MHz |
ROM size |
512 bytes |
Standard RAM |
256 bytes |
Maximum RAM |
640 bytes on-board. |
Keyboard type |
20 key touch sensitive membrane, using conductive rubber to bridge P.C.B. tracks, and providing hexadecimal 0-9 and A-F plus Go, Mem, Abort and Term. |
Supplied language |
Machine code loader |
Text resolution |
8 hexadecimal digits using a seven segment LED calculator display. |
Graphics resolution |
64 x 64 pixels with optional VDU display adaptor |
Colours available |
Red LED. Monochrome with VDU adaptor. |
Example Screenshot |
|
Sound |
None except by connecting a speaker to the output port and rapidly toggling the bit. |
Cassette load speed |
Optional cassette interface operated at 40 baud. |
Dimensions (mm) |
115 x 255 x 30 approx. |
Special features |
Supplied as a build-it-yourself kit of parts, without a case. |
Good points |
The cheapest 'computer' available. |
Bad points |
There was not a lot you could do with 256 bytes of memory and an 8 digit display. |
How successful? |
Around 15,000 were sold, a considerable number for the early days of computing. |
Comments |
The MK14 was Clive Sinclair's first computer and although its specification was nowhere near the contemporary PET and Apple, it was just about a programmable computer. If the MK14 had not sold well there might never have been a ZX80, ZX81 and ZX Spectrum, or Acorn's range of computers. (Chris Curry, the co-founder of Acorn, worked for Science of Cambridge in the late 1970's.) |
Back to chronological list |
Home Page |
Next computer |