Busicom 141-PF Calculator

[atilla457]

Not super HP related but an attempt to keep an old calculator alive (for its 49th birthday tomorrow).

I completed my RetroShield 4004 daughtercard for Arduino Mega. It can emulate Busicom 141-PF calculator using the original ROM images.
Intel 4004 chip executes code while Arduino emulates rest of the calculator hardware (spinning drum printer and the keyboard).
Let me know if you want me to run any tests

Write-up here:
http://8bitforce.com/projects/4004/

Calculator ROM extracted and fully documented (by 4004.com team):
https://www.4004.com/2009/Busicom-141PF-...-1-0-1.txt
https://www.4004.com/

I will try to bring it to the next get-together.

Everything is open-source.

RetroShield 4004 and Arduino:


Example Output: