Issue No.11 - November (1973 vol.22)
E.E. Swartzlander , Technology Service Corporation
Multiple-input circuits that count the number of their inputs that are in a given state (normally logic ONE) are called parallel counters. In this paper three separate types of counters are described, analyzed, and compared. The first counter consists of a network of full adders. The second counter uses a combination of full adders and fast adders (that may be realized with READ-ONLY memories), while the third type of counter uses quasi-digital (i.e., analog current summing) techniques to generate an analog signal proportional to the count which is then digitized.
Associative processors, carry-shower counters, computer arithmetic units, digital counters, full-adder counters, multipliers, parallel counters, quasi-digital processing, READ-ONLY memory fast adders, response counters.
E.E. Swartzlander, "Parallel Counters", IEEE Transactions on Computers, vol.22, no. 11, pp. 1021-1024, November 1973, doi:10.1109/T-C.1973.223639