DBMS

  A   timer   is a specialized type of clock which is used to measure time intervals. A timer that counts from zero upwards for measuring time elapsed is often called a   stopwatch . It is a device that counts down from a specified time interval and used to generate a time delay, for example, an hourglass is a timer. A  counter  is a device that stores (and sometimes displays) the number of times a particular event or process occurred, with respect to a clock signal. It is used to count the events happening outside the microcontroller. In electronics, counters can be implemented quite easily using register-type circuits such as a flip-flop. Difference between a Timer and a Counter The points that differentiate a timer from a counter are as follows − Timer Counter The register incremented for every machine cycle. The register is incremented considering 1 to 0 transition at its corresponding to an external input pin (T0, T1). Maximum count rate is 1/12 of the...