Philippe Roca sent me photos and Gerber PCB files from his Junior system.
From scratch, reading the original Elektor articles, he designed and built a complete Junior system.
Faithfull to the original and with even the ‘problem’ parts such as the 2708 EPROM on the main PCB and the 82S33 PROM on the interface card. For those devices he built programmers!
Still working on building and testing (January 2021), here photos and Gerbers of finished and working cards.
Junior
Interface card
Programmers
PCB’s
Gerbers download
![]() |
Junior PCB gerber |
![]() |
Display print gerber |
![]() |
Power supply gerber |
See also:
Proton PC-1
The Proton PC-1 is a 6502 based computer in a keyboard case. Produced by the Dutch electronics firm Post Electronics, la...
MTU and Eduardo Casino
Since 2023, after replicating a working KIM-1 Rev D PCB, Eduardo has been replicating and enhancing MTU products.
See...
MTU K-1000 power unit
K-1000 Basic KIM-1 power supply, completely enclosed, terminals trip output +5V @ 1.2A, +12V @.01A regulated, +7.5V @.75...
K-1013 floppy controller
Used in the early KIM-1 MTU bus system and in the MTU-130/140 systems.
16K RAM
Bootstrap ROM 256 bytes
Double ...