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A peculiar Casio fx-4000p
03-14-2021, 10:39 AM
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A peculiar Casio fx-4000p
Hi All,

A long time lurker here (for about 18 years I think). Recently, I started expanding my collection to some old Casio and Sharp models.

While playing with one of the recent acquisitions, Casio fx-4000p, I discovered something quite peculiar.

While it is supposed to have 550 programming steps (from various online sources as well as pg. 22 of the manual), I noticed that mine was showing 874.

I was further shocked when I checked the current memory allocation (by typing Mode -> . -> EXE). It says M-117 S-1874 which seems to suggest that it has 1874 (not 874) programming steps. Since the calculator can only display 3 digits of programming steps in the WRT mode (Mode -> 2), the first digit was hidden, thus only showing the last 3 digits i.e. 874.

I have not tested if I am actually able to use up 1874 programming steps (but the programming works as expected).

Any idea what is going on here? I opened up the calculator to clean the contacts and re-apply some double sided tapes, but did not observe any signs of modification.

Cheers,
J. Lee


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A peculiar Casio fx-4000p - jhlee0218 - 03-14-2021 10:39 AM
RE: A peculiar Casio fx-4000p - grsbanks - 03-14-2021, 02:13 PM
RE: A peculiar Casio fx-4000p - jhlee0218 - 03-15-2021, 01:58 AM



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