>>> Was there ever a time when programs were entered into memory via 
>>> switches rather than some other medium?
>>
>> I do that all the time :-)
>
> *sigh*

:-D

> I ment where you have a bank of switches to select a memory address, and a 
> second bank of switches to select what datum to write there.

I did that at university.  We had a hex keypad to write machine code 
instructions to RAM.  IIRC we had to write a program to do some thermostat 
control of a heater or something - extra marks for proportional control. 
But then this was just part of the CPU course to get us familiar with 
instructions and stuff.

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