Addition:
a + 0 = 0
a + 1 = 1
a + a = a
Where: a ? 0
Multiplication:
0 x a = 0
1 x a = a
a x a = a
This circuit was obtained from a 1978 Practical Wireless. It causes an LED to flash at a frequency that...
This circuit is from a 1968 Electronics World. It acts directly on a high voltage alternating...
This sensitive circuit with common transistors was found in the Radio Electronics magazine of July...