Alphabet flasher
Electronic

Did you figure ways to make the Digital Display in our last Project (A phony counter?) indicate something other than 0 or 1 ?

This circuit will flash the capital letters A and E at you.

This circuit is the same astable multivibrator used in our last Project. By altering the connections to the Display, A and E are flashed over and over instead of 0 and 1.

But A and E aren't the only letters that you can show on the Display — C, F, H, J, L, P and U can also be displayed! (But we're not going to tell you how - figure it out yourself and enter it in your notebook.)

You can dream up some other interesting circuits the multivibrator by altering the values of ...

c'mon, by now we don't have to tell you which parts to change! (We're right, aren't we?)

You can dream up some other interesting circuits using a multivibrator on your own. Take a look back at some of our Projects using line decoders and see if you can discover a way to light two or more LEDs at different times using a multivibrator.