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Stopwatch circuit

  1. Mar 19, 2009 #1
    I am in need of a schematic for a circuit that acts as a stopwatch which counts and displays seconds and 1/100ths of seconds for a high school engineering project. The circuit would have two input switches: one that acts as a start/stop button and one that acts as a reset button. After searching around on the internet, the closest thing I have found were these:


    These would work except that I need it to display 1/100ths of a second as well. Having minutes also would be helpful but not necessary. Could anybody help me figure out how I could do this?
    Thanks, any help is appreciated.
  2. jcsd
  3. Mar 19, 2009 #2


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    Science Advisor

    Do you know how to use a microcontroller? It'd be dead simple with one.
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