I recently found an HP 11C at a yard sale for $0.50, but I don't know
how to test it.  I put batteries in it and it works, but I know there
is a better, more thorough way to test it!  Thanks in advance,

Eric

Eric Dickerson wrote:
> I recently found an HP 11C at a yard sale for $0.50, but I don't know
> how to test it.  I put batteries in it and it works, but I know there
> is a better, more thorough way to test it!  Thanks in advance,
> 
> Eric
  quoting from the hpmuseum.org . . .
"  Self test: with the calculator off, hold the � key and press ON. The 
calculator will display running for around half a minute and then 
activate the entire display to indicate success. The test my be done 
continuously by pressing + while holding the ON key. To stop the 
continuous test at the end of the current iteration, press and hold - 
and then press ON."

" There is also a keyboard test. With the calculator off, press and hold 
� and press ON. Now press each key from the top left moving left to 
right and then down (the enter key gets pressed in both the third and 
fourth rows.) If all keys are pressed in the correct order and are 
working, the model number (without the C) is displayed. Otherwise, Error 
9 is displayed. (The display will show a changing pattern of segments as 
keys are pressed.)"

http://www.hpmuseum.org/features/11cf.htm
-- 
Chris W

Bring Back the HP 15C
http://hp15c.org:8080

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Chris W <1qazse4XYZ@cox.net.removeXYZ> wrote in message news:<%JPuc.1654$CW.680@lakeread05>...
> Eric Dickerson wrote:
> > I recently found an HP 11C at a yard sale for $0.50, but I don't know
> > how to test it.  I put batteries in it and it works, but I know there
> > is a better, more thorough way to test it!  Thanks in advance,
> > 
> > Eric
>   quoting from the hpmuseum.org . . .
> "  Self test: with the calculator off, hold the � key and press ON. The 
> calculator will display running for around half a minute and then 
> activate the entire display to indicate success. The test my be done 
> continuously by pressing + while holding the ON key. To stop the 
> continuous test at the end of the current iteration, press and hold - 
> and then press ON."
> 
> " There is also a keyboard test. With the calculator off, press and hold 
> � and press ON. Now press each key from the top left moving left to 
> right and then down (the enter key gets pressed in both the third and 
> fourth rows.) If all keys are pressed in the correct order and are 
> working, the model number (without the C) is displayed. Otherwise, Error 
> 9 is displayed. (The display will show a changing pattern of segments as 
> keys are pressed.)"
> 
> http://www.hpmuseum.org/features/11cf.htm


Chris,
  Thanks.  I totally forgot that www.hpmuseum.org has this information
for most calculators.  Thanks again for the information.

Eric