Timeline for Why do people clear the screen multiple times when using a calculator?
Current License: CC BY-SA 3.0
6 events
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| Dec 3, 2013 at 23:08 | comment | added | supercat | ...will allow the supply voltage to rebound within a half-second or so, but the fact that the voltage was low when the button was pushed may cause the calculator to have not reset cleanly. A second push after the voltage has rebounded would resolve things. Given that many people have sometimes used calculators with a CE/C button, pushing twice as a matter of habit is easily explainable as either occasionally-necessary behavior, or a consequence of seeing others do it. | |
| Dec 3, 2013 at 23:05 | comment | added | supercat | My understanding is that while calculators are made of of latches which are each supposed to be either "high" or "low", reducing the voltage on a latch just the "right" amount before reapplying power may leave it in an intermediate state. Latches which are in such states may draw more current than latches which are cleanly high and low, and this current draw may "drag down" the supply voltage below the level required for reliable operation. Pushing reset once will kick any latches that were not cleanly high or low, and ... | |
| Nov 22, 2012 at 20:56 | history | edited | JonW♦ | CC BY-SA 3.0 |
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| Mar 23, 2012 at 9:39 | comment | added | Piskvor left the building | @ChrisF: True. However, I haven't seen the physical reset issue mentioned in any other answer. | |
| Mar 23, 2012 at 9:37 | comment | added | ChrisF | The C/CE issue is already mentioned in this answer | |
| Mar 23, 2012 at 9:33 | history | answered | Piskvor left the building | CC BY-SA 3.0 |