Calcuator forensics history question
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04-19-2021, 08:01 AM
(This post was last modified: 04-19-2021 08:30 AM by EdS2.)
Post: #3
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RE: Calcuator forensics history question
Commodore UK ran press advertisements using the 29 version of the forensics test, in October 1976. I remember seeing one, which I would have said was in the daily paper. But this one is from New Scientist, a weekly:
But perhaps from March 1976, in a US monthly "Popular Computing" we see the same test. Here's an OCR: Quote:THE ACCURACY TEST : Before you buy a scientific check the accuracy with this simple test : 29 sin cos tan VX in ex x2 tan - cos - sin - 1 : ? The 29 is degrees , of course , since no machine will invert the trig functions on 29 radians. The SR - 52 of Texas Instruments gives this result : 29 . 00001537 . Various Hewlett - Packard machines return values around 29 . 00xxxx , inasmuch as they carry their calculations to only 10 significant digits . The CBM ad fails to state just what the result is on their machine ... which tells us that the idea again comes from a Commodore advertisement. Aha - but in fact, in 1978, it is said to come from a UK advert! Quote:In issue 46 we reported an advertisement by CBM Commodore , U . K . , Ltd . , which suggested that you test any " scientific " calculator by carrying out (I see now that The Observer, a Sunday paper, and Private Eye, a fortnightly, also carried Commodore ads with this test.) |
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