AVR is a family of microcontrollers from Atmel. In principle, microcontroller is a midget computer in a single IC which can be programmed to do all sorts of things. AVRs are equipped with built-in ...
A timer is a simple counter! The input clock of microcontroller and operation of the timer is independent of the program execution.All the Atmel microcontrollers have Timers as an inbuilt peripheral.