Junior computer
The junior computer was an expandable single-board computer - kit based on the 6502 processor .
The computer was developed by Loys Nachtmann for the magazine Elektor , which presented the kit in a multi-part series from May 1980. Although the Elektor Junior Computer was not the first single-board computer based on the 6502 processor (the KIM-1 was already available in the USA at that time ), it was a very successful model, especially in Western Europe, and it was reproduced several thousand times . The development of the junior computer was inspired by the KIM-1.
In the basic configuration, the system had 1 kByte ROM and 1 kByte RAM . Six 7-segment displays and a keypad with 23 keys were available for operating the monitor program in the ROM . The basic configuration could be retrofitted with an interface card that was mounted with spacers under the base board. This contained slots for a memory expansion (4 kByte EPROM , 1 kByte RAM), a parallel interface module and an interface to save programs on music cassettes .
A bus card could be plugged into the interface card, via which the system could be upgraded with additional plug-in cards. There were several different memory cards, an input / output interface, a floppy disk interface , EPROM programming device , video terminal and much more. In addition to the four books on the junior computer published by Elektor, a whole series of "paperware" print editions with tips and tricks, program examples and listings were created.
literature
- A. Nachtmann, GH Nachbar: Junior Computer, Book 1; (1982); ISBN 392160818X
- A. Nachtmann, GH Nachbar: Junior Computer, Book 2; (1982); ISBN 3921608236
- A. Nachtmann, GH Nachbar: Junior Computer, Book 3; (1982); ISBN 3921608244
- A. Nachtmann, GH Nachbar: Junior Computer, Book 4; (1982); ISBN 3921608252