cross-posted from: https://lemmy.world/post/23724729
My dad says he's never replaced the battery in it. We saw this in a home video and laughed when we found the still uses it 40 years later.
For testing:
this post was submitted on 31 Dec 2024
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Pretty sure I used that same one to keep my accounts balanced in the mid/late 80's.
It had a "permanent" memory of your account balance.