University of Edinburgh
 

BSL Physics Glossary - analogue - definition

Translation: An analogue signal is continuous, unlike a digital signal which switches on and off. An old fashioned watch with hands has an analogue signal: the hands move slowly round the clock face. Compare this to a modern, digital watch display, eg; 12:30 to 12:31 which happens suddenly. The sign for analogue shows it has a continuous wave form.