Heathkit Microcomputer learning system with manuals - $400 (Kensington)

Heathkit Microcomputer learning system with manuals 1

Heathkit Microcomputer learning system with manuals 1 thumbnail

Connecticut Ave near Knowles Ave

condition: like new

make / manufacturer: Heathkit

model name / number: ET-3400

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Calling all vintage computer/computing enthusiasts, ham radio operators, and antique electronics aficionados! Here's a chance to get three vintage Heathkits, all in good condition. Each one is clean! I haven't put them through their paces, but see no reason why they won't function as-intended. They all power on, of course. Manuals and extra paperwork included, too!

Included in this set are the following Heathkits:
ET-3100 Electronic Design Experimenter
ET-3200 Digital Design Experimenter
ET-3400 Microprocessor Trainer (also called the Microcomputer Learning System)

This is a flashback to 1978 (when the kits were introduced, as I understand it). The ET-3400 has a Motorola 6800 CPU running at about 500 kHz, with 512 bytes of RAM and 1 KB of ROM.

Cash only. If the ad is up, everything is available. Feel free to ask questions!

post id: 7933266239

posted: 2026-05-09 16:39

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Heathkit Microcomputer learning system with manuals - electronics -...

Calling all vintage computer/computing enthusiasts, ham radio operators, and antique electronics aficionados! Here's a chance to get three vintage Heathkits, all in good condition. Each one is...