Hi When I was at Intel, years ago, Litrtronix just came out with one of those four letter LED display modules. At the time, I had a 8741 in my desk drawer. I decided to make a random four letter word display. Between me and another fellow, we had about 15 or so good ones. Then we got help from this lady that worked as a tech writer. She brought the list to over 50. She calimed it was because she majored in English. I used the minimum of parts. As I recall, the uP used a coil for the frequency reference, powersupply for 5v, the display, a couple of capacitors, the display and the uP. Dwight