Flip-Flops
A flip-flop is a bistable digital circuit that is used to store a single bit of information. It has two stable states, which are typically represented by the binary digits 0 and 1.
• They are also known as bistable multivibrators or R-S latches.
• A synchronous circuit is a circuit in which the changes in the state of the circuit are synchronized by a clock signal. This means that all of the state changes in the circuit occur at the same time, in response to the rising or falling edge of the clock signal.
• A clock is a signal that oscillates between two levels at a regular frequency. The clock signal is used to synchronize the operation of digital circuits. This means that all of the state changes in the circuit occur at the same time, in response to the rising or falling edge of the clock signal.
Edge-triggered flip-flop:
An edge-triggered flip-flop is a sequential logic device that changes state on the rising or falling edge of a clock signal. It is also known as a clocked flip-flop.
• A positive edge-triggered flip-flop is a flip-flop that changes state on the rising edge of the clock signal. This means that the output of the flip-flop is set to the value of the input signal on the rising edge of the clock signal. When the clock signal is low, the output of the flip-flop remains in its current state.
• A negative edge-triggered flip-flop is a flip-flop that changes state on the falling edge of the clock signal. This means that the output of the flip-flop is set to the value of the input signal on the falling edge of the clock signal. When the clock signal is high, the output of the flip-flop remains in its current state.
