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Revision as of 21:02, 26 December 2013


In this tutorial we will see 8051 timers. We will use the 8051 timers to generate a precise delay of 1 sec.

8051 timers/counters

The 8051 has 2 timers/counters.

  • They can be used to generate precise timing, i.e., we can measure time between events. The unit is then called timer.
  • It can also be used to count external events, known as counter.
  • Timer 1 is also used for generating baud rate in serial communication, which we will discuss in the next tutorial

Timer Counter Operation