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Issue No. 11 - November (1973 vol. 22)
ISSN: 0018-9340
pp: 1021-1024
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. Swartzlander, "Parallel Counters," in IEEE Transactions on Computers, vol. 22, no. , pp. 1021-1024, 1973.
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