a device or instrument used to automatically record or count numbers; used for keeping track of quantities, events, or digital data

a system of recording or representing numbers, such as decimal or binary systems

a person who counts or a device used for counting

data or information collected and organized for analysis; statistics

statistical figures; statistics

an instrument used for detecting and measuring ionizing radiation

An instrument used to measure the rate of events, such as radioactive decay or electrical pulses

a device or tube used for counting, such as a Geiger counter or a nomotron

a measurement of radiation or noise level taken from the environment when no specific source is being measured