Results tagged #Prom in Circuits
PROM CW IDENTIFIER
Call letters stored in 8223 PR0M U3 drive 74151 multiplexer/data selector U4 for keying NE555 audio oscillator U5 which feeds transmitter mi...
SI ABBREVIATION DISPLAY
Programmed Signetics 8223 256-bit PROM is used as alphameric display having five 7-segment digits connected to form alphameric simulation of...