This Texas Instruments circuit is from the 80's. However, it can be implemented with modern operating systems. The power supply must be symmetrical.
This experimental circuit is from a 1975s publication. The coil consists of 80 turns of wire AWG...
Found in 1967 documentation, this circuit makes use of period transistors and drives a common...
More inputs can be added to this adder that we found in the January 1995 Electronics Now magazine....