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pulse train counter hardware design

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madiger

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Hi everyone

I have a train of pulses coming in at a varying frequency. I want to design a circuit with a counter that counts these clock cycles on an 8 bit counter, having the counter end/reset every second, sending what has been counted to a processor. Any suggestions?
 

74HC393 could be used for your application and should be connected as below.
11_1289286511.gif

The data sheet is **broken link removed**.
The reset pulse for every second can be provided from the micro processor or a timer circuit could be used for this purpose.
 

You could use a PIC micro controller to count the number of pulses every second and then store the result in a register for processing or output the result to a i/o port to send to another processor.
 
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