A digital counter is an electronic device designed to count signals or events. It is also known as a digital tally counter or a number counter. There are many synonyms for digital counter such as an electronic tally counter, digital odometer, pulse counter, and event counter. A digital odometer is commonly used in cars to calculate the distance travelled by the vehicle. A pulse counter is used in electronics to count the number of pulses in a signal. An event counter is used to count the number of events that occur in a specific period of time. The terms digital tally counter and digital counter are the most commonly used synonyms for this device.