View Single Post
Old 2nd Aug 2021, 4:36 pm   #12
G6Tanuki
Dekatron
 
G6Tanuki's Avatar
 
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,953
Default Re: Old calculators.

HP33C here - bought for me by my father from a company called "Sumlock Bondain" in Birmingham for me to take with me when I went to Uni.

[I believe Sumlock Bondain were associated with the 1960s ANITA calculators]

The HP33C still works - sort-of. It's got the dreaded poor-contact-between-the-chips-and-the-PCB issue so you sometimes have to squeeze it a bit to get all the digits to light. Also the little angled PCB-with-springy-contacts-riveted-on-it that serves as one wnd of the battery-compartment has suffered from battery-corrosion, one of the springy contacts became brittle and snapped off during a battery-change. It's botched with a soldered-on bit of the phosphor-bronze=wool stuff used as a RFI-proofing gasket.
G6Tanuki is offline