A timer is a clock used to measure specific time intervals. Theyre programmable by the user so that the time period to be measured can be set. Some timers feature an alarm and can count up, as well as countdown. Timers are available in digital and analogue version:
A stopwatch is a timepiece thats designed to accurately measure the time that has elapsed between its activation and deactivation. It allows measurement down to fractions of a second and is most commonly used in sporting activities. Stopwatches are also available in both digital and analogue displays:
Combination clock/timers/stopwatches provide functionality from all three devices with telling the time, countdown timer and stopwatch capabilities, all in one unit. Theyre also available with calendar and alarm functions. The digital display makes them easy to read. These units are particularly useful in the workplace, as well as the home, when doing activities that need to keep to deadlines.