CALCULATOR_COUNTS_BY_4s

Published:2009/7/13 4:39:00 Author:May | From:SeekIC

Connection shown for National MM5736 calculator chip counts either up or down by 4s, as might be required for keeping track of inventory in bin when parts are packaged in groups of 4. To count by numbers other than 1, desired number is entered into calculator during manual start operation. When S2 is pushed, counter adds 4 to accumulated total. When S3 is pushed, counter subtracts 4 from accumulated total. Logic ele-ments provide self-starting action of counter. -M. Watts, Calculator Chip Makes a Counter, National Semiconductor, Santa Clara, CA, 1974 AN-112,p5.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/CALCULATOR_COUNTS_BY_4s.html

Print this Page | Comments | Reading(3)