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Notes |
Manufacturer |
Acorn Computers Ltd (UK) |
Model |
System 1 |
Date Launched |
April 1979 |
Price |
£75 as a kit |
Microprocessor type |
MOSTEK 6502 @ 1.006 MHz |
ROM size |
512 bytes |
Standard RAM |
1156 bytes |
Maximum RAM |
32 kilobytes with external cards |
Keyboard type |
25 click keys covering hexadecimal digits and commands |
Supplied language |
Monitor program for viewing and editing memory contents. |
Text resolution |
8 digit, 7-segment LED |
Graphics resolution |
No graphics |
Colours available |
Red LED |
Example Screenshot |
|
Sound |
None |
Cassette load speed |
300 baud |
Dimensions (mm) |
Two cards each 160 x 100 x 25 |
Special features |
Designed for expandability - optional extras included EPROMs, serial/parallel interfaces, floppy disk drives, EPROM programmer, full ASCII keyboard. |
Good points |
Low price for the basic system. |
Bad points |
Relatively expensive when fully expanded with extra memory, disk drives, keyboard, VDU display etc. |
How successful? |
Moderately successful in itself but it led on to the Atom and highly popular BBC Model B computers. |
Comments |
System 1 consisted of two Eurocard sized circuit boards. One held the keyboard and display and the other the processor, memory and support chips. They could be stacked one above the other for neatness. |
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