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My Wonky CalcuLESS (Posted on 2009-02-18) Difficulty: 3 of 5
I bought a new calculator at the Dollar Store and, sure enough, it’s defective. After some trial and error with it, I discovered that each digit in the display contained the same two pairs of elements (out of the seven elements labeled A to G below) that were somehow ‘cross-wired’. That is, if one element was called upon to illuminate, its partner would illuminate instead. If both were supposed to illuminate, neither would! For example, if A/D and B/F were the faulty pairs, the number 3 would simply display as F/G/C, as illustrated below.

A
F B
G
E C
D


Based on the illuminated elements for each digit given below, find the faulty pairs to then solve the following 3-digit by 2-digit multiplication:

C/DF/B/G/E/CG/E/C
XF/G/C/DF/G/E/C/D
F/E/C/DF/G/C/DF/G/E/C/DF/E/C/D


See The Solution Submitted by rod hines    
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re(9): problems with computer program Comment 13 of 13 |
(In reply to re(8): problems with computer program by Robby Goetschalckx)

I should have looked at the alternatives in http://en.wikipedia.org/wiki/Seven-segment_display_character_representations.

Inexpensive HP calculators use the scheme of http://en.wikipedia.org/wiki/Seven-segment_display, while inexpensive TI calculators seem to prefer the extra segment on the 7. More expensive calculators use a regular font rather than the segmented displays.


  Posted by Charlie on 2009-02-20 11:39:34
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