HP Pioneer series calculator internals
Takayuki HOSODA
Nov. 17. 2009

Japanese Japanese edition is here.
Please use the ▶mirror site as well.

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

HP 42S memory upgrade and overclock
Pioneer "Observational Internals", Paul J. Brogger

www.finetune.co.jp [Mail] © 2000 Takayuki HOSODA.
Powered by