•
Counter (digital), an electronic circuit that counts rising or falling edges of a clock signal •
Counter machine, a subclass of register machines •
Loop counter, the variable that controls the iterations of a loop •
Jeton, a reckoning counter used on reckoning boards for calculations •
Mechanical counter, a digital counter using mechanical components •
Tally counter, a mechanical counting device •
Web counter, a counter that counts the number of visits to a web page •
Project COUNTER, a standard for reporting usage statistics of electronic resources •
People counter, a device used to measure the number of people transversing a certain passage or entrance ==Games and sport==