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Electronically_programmed_timer_using_an_Intersil_8240_50_60

2014-11-08 09:41  
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Electronically_programmed_timer_using_an_Intersil_8240_50_60_16_pin_DIP
Electronically programmed timer using an Intersil 8240/50/60 16-pin DIP. This circuit uses a standard 54/74 series TTL 4-bit magnitude comparator to compare the digitally programmed input with the 8240/50/60 counter outputs. The greater, less-than and equal waveforms provide several outputs to choose from. An external start pulse triggers the timer and the A<B output is used as a reset (courtesy Intersil, Inc.).