This circuit uses uncommon Texas Instruments components today. The circuit is from an American documentation. Transistors are commonly used PNP. The display is 7 segment multiplexed.
This circuit was found in the December 1977 issue of Radio Electronics magazine. The circuit uses...
We obtained this circuit from an old Argentine magazine. The circuit originally uses germanium...
The 78XX series voltage regulator integrated circuits do not support an input voltage greater than...