This Sharp pocket computer is very interesting. It was manufactured with the sole purpose of being programmed with custom ROM. These were mainly used by businesses with very specialized purposes. The one below was originally used to calculate car liscense plate fees.
It does nothing, without a program memory. Most have ROM but you can get these with RAM. If you have a RAM module, these can be made very useful by reprogramming them.
I have reprogrammed this one to simply return the function key name, when the key is pressed. Now that I know the process, I'm going reprogram it for something more useful.
Click image for description of process
Edited: 22 Nov 2003, 7:40 p.m.