HP 9825 Scientific Desktop Computer

Introduction to the HP 9825

The Hewlett-Packard Journal edition of June 1976 gives a great overview of the HP 9825, and can be downloaded here:

Steve Leibson has an entire web site dedicated to the HP 9825, recounting its history from inside HP and its lineage starting with the quintessential HP 9800 calculator and the HP 1000 16-bit mini-computer:

The HP Museum has a ton of documentation, here it is in context of the whole series of 98x5 computers:

HP 9825 Videos:

For now the HP 9825 just makes a few cameo appearances in my other videos, like here in my HP DC100 Cartridge restoration video at 18:03:


Full videos about that great computer will be coming up.

HP 9825 Manuals

HP 9825 Schematics

HP 98035 Real Time Clock Module Documentation