You don't need a power supply to test these. I believe they run off of
AA batteries. They have built-in programs in rom (basic, word processor,
terminal program), so you shouldn't need to run a self-test. Generally,
they go from $40-$100 depending on condition and accesories.
Joe wrote:
I have a chance to buy a box full of Radio Shack model
102 portable
computers. None have been tested and there are no power supplies with
them. Does anyone know what voltage and polarity the external power
connector uses? And if there is any kind of self-test built-in? Can
anyone
give me an idea of what these are worth?
Joe