People use stop watches and timers to measure and evaluate performance by monitoring results as a function of time. The two most important qualities of a stop watch are accuracy and reliability. Stop watches have many uses the more common being sports and the field of medicine. A stop watch will measure performance in a sports competition. It will also be an important gadget in the hospital or the doctor’s office.

We are seeing a lot of applications of the stop watch. We find it in cell phones and in digital clocks. We see it as huge structures in sporting events that are visible to a large number of people. There are analog stop watches and there are digital stop watches. The advantage of the digital stop watch is that they allow the measurement of time to a mere fraction of a second, without the need to closely examine the position of clock hands.