ABSTRACT
Individual sequential logic circuits are used to design more complex circuits such as counters, shift registers, latches, or memories, etc., but to operate these types of circuits in a “Sequential” way, one requires the addition of a clock pulse or timing signal to cause them change their state. The clock pulses are generally square shaped waves that are produced by a single pulse generator circuit which oscillates between a “HIGH” and a “LOW” state and generally has an even 50% duty cycle, that is it has a 50% “ON” time and a 50% “OFF” time. The sequential logic circuits that use the clock signal for synchronization may also change their state on either the rising or falling edge, or both of the actual clock signals.
These are devices for generating timing waveform or clock waveform. There are three types of multivibrators.
