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Design features and requirements of the design of the metric M = 99 plus/minus CNTR (1) when connected to power supply circuits can be self-starting (2), respectively, to achieve added manually, by counting and automatic counting realize reversible addition and subtraction (3) digital tube display numerical count. (4) of a given component: 74LS192, 74LS00, 74LS76, 74LS48 and LED.
Packet : 81404611module=99reversibilitycounter.rar filelist
Module=99 reversibility counter.wps