I need a simple microprocessor that can calculate time. Time less than 1 sec. The plan is to have 2 trigger inputs. 1st trigger to start the clock, and the 2nd trigger to stop the clock, and the total time is the difference from start to stop. Also, I will need the micro to be able to do simple calcuation like add/subtract/divide and be able to output data to a display. Any suggestion on which microprocessor kit that i can use? I don't want to pay too much for it. thanks