This will be, depending on its success. The first of many products in a range I have in mind. Including a computer based oscilloscope, power supply, wireless Data links, analogue sig-gen... etc.

Membrane keypads are nice, have started using them at work. but theres a £300 set up charge ($600ish)

Output was going to be only 5v TTL for direct connection to logic.

Next question, for a few extra dollars, would it be worth having a back lit LCD display as opposed to a reflective one?

Also, out of the following list, which would be most desirable?:
  • Digital signal generator
  • RS232 analyzer and generator
  • Analogue signal generator
  • Computer based oscilloscope/spectrum analyzer
  • Computer controlled analogue and digital I/O interface box (with C libraries)
  • Universal motor driver (stepper, DC, servo) computer connection.
  • Pulse timer/Chronograph