Nov 142020
http://www.finetune.co.jp/~lyuka/interests/calc/pioneer/
Takayuki HOSODA
Nov. 17. 2009
Japanese edition is here.
PCB of the HP pioneer series calculators
Left: HP-17BII, Center: HP-27S, Right: HP-42S(modified)
Membrane switches
Key pad and back plate (with LCD)
Partial schematic of the HP 17BII/27S/42S
SEE ALSO
HP 42S memory upgrade and overclock
Pioneer “Observational Internals”, Paul J. Brogger
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Copyright (c) HOSODA Takayuki. All rights reserved.
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