MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -A timer uses the frequency of the internal clock, and generates delay. A counter uses an external signal to count pulses.

Detailed explanation-2: -Timers are one of the most important features in modern microcontrollers. They allow us to measure how long something takes to execute, create non-blocking code, precisely control pin timing, and even run operating systems.

Detailed explanation-3: -The Counter/Timer has the ability to measure rise time or fall time from an input signal. The input signal must be connected to channel A. Time correlated measurements can be performed using the arm input. The Counter/Timer will not initiate a measurement until an arm signal of TTL level is detected.

Detailed explanation-4: -8051 Microcontroller has two 16-bit counters/timers: timer 0 and timer1. These timers work as a counter also. It means these timers perform dual function. When they work as a timer to generate a time delay or as counter to count events happening outside the microcontroller.