Reversing Sinclair's 1974 calculator hack (2013)

Re:Reversing Sinclair's 1974 calculator hack (2013) by Someone on Monday September 20, 2021 @04:16PM (#28598405)

Or their manufacturing was so imprecise that they had to make more than two holes to (most of the time) get at least two that were in the right-enough place and where the screw would actually “grip” the plastic.

I expect, though, that the first batch used all holes and that this was a matter of using excess inventory with too many holes after realizing that they could do with fewer ones.

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Re:Reversing Sinclair's 1974 calculator hack (2013) by anyfoo on Tuesday September 21, 2021 @06:53PM (#28611035)

Interesting with the imprecise manufacturing, haven't thought about it like that (and obviously don't know anything about the mechanical part of manufacturing).

I'm better at judging the electronics/computer design, and there it's obvious to me that they went out of their way to stay cheap.

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