The timing circuits are the special purpose circuits which are generally used in digital circuits. We have the following important types of timing circuits:
1. 555 Timers are used in timing circuits very often as they are more reliable and lost cost. We have the two modes of operation of 555 Timer:
- Monostable operation
- Astable operation
2. Schmitt Trigger: This is used to sharpen up falling and rising edges of DATA signal.