![]() When you exceed the displays capacity, the indicator to the right of the display comes on, indicating 1 or 2 undisplayed MSDs. The display is fixed at two decimal places, but, you can use numbers 999999.99 (only millionaires would need to use such numbers, and there were fewer of them in 1972). ![]() In fact, doing addition and subtraction is just like RPN, which is also how many mechanical adding machines worked I guess. You have to clear it before doing a - calculation or else the previous result will get used in an RPN-ish manner. Instead, the card reader has a contact for every possible hole position, and the card itself becomes a ROM Very cool. ![]() Therefore, multiplication and division are done internally as log-add-antilog Of course, this enables the relatively simple inclusion of functions like square and square-root in addition to log and antilog.Ĭircuitry is entirely discrete transistor (over 1,200) not a single IC. ![]() The 69 entry (get your mind out of the gutter) gives the time to calculate the factorial of 69. The Forensic is a quick test to gauge the accuracy of the trig algorithms, the number of internal digits, and sometimes even the chip (set).Ĭheck the site for more info (a couple of my results for non-working units were taken from this site).
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