Wouter van Ooijen wrote:
> Jan-Erik Soderholm wrote:
>> Wouter van Ooijen wrote:
>>
>>> For the more advanced guessers: why does the ASCII character DEL have 
>>> the value 0x7F, and what is its exact meaning?
>>>
>> "All (7) holes punched".
> 
> If you were a student that would be the problematic type of answer, 
> because it is totally correct, but does not prove that you understand 
> why. Which might mean that the question was badly done...

No I do not think it was. :-)
It was a perfectly valid question.
And a good one... :-)

> 
> So why is DEL "all holes punched", and what does it mean? For instance, 
> does it mean "delete the previous character", like a backspace?
> 

It replaces what was there before in the same position
on the punched tape with what could be seen as a "NOP".
If my memory doesn't fail me...
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