Hello, up for sale is a pair of 2pcs - HeathkitET-3400 Microprocessor Trainer – Microcomputer Learning System. Both power upand display “CPU UP” when the reset button is pressed, which means the unit isfunctioning and the CPU can read the code in the ROM. I also did the followingtests:

1) In the first picture Ipressed ACCA on the right trainer. You can see that the display shows thecontents of Accumulator A.

2) In the second picture Ipressed PC on the left trainer and AUTO on the right trainer.

3) I then proceeded to enterdata into the memory and all keys 0-9 and A-F are working correctly. All characters are displayed and the memory indexes when values are entered.

PLEASE NOTE: I did not test these trainers beyond whatis mentioned above. What you see is what you get. The breadboard on eachtrainer has a 6821 PIA and a few other chips installed on them. These are extraICs that did not come with the kit originally. There is no paperwork ordocumentation included.

These are being sold as-is with no return so pleasereview the pictures carefully and let me know if you have any questions.

Thanksfor looking, Kevin.