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The characteristics are as follows: 1. Compared with the conventional RS flip-flop, the synchronous RS flip-flop has one more terminal, which is called the clock signal input terminal support structure. 2, when the input terminal state changes, and only when the clock signal input terminal has a square wave signal, the synchronous RS flip-flop state will change.

The operating environment of this tutorial: windows7 system, Dell G3 computer.

1. Synchronous RS flip-flop: make the synchronous RS flip-flop change the output state according to the clock pulse timing.

2. Basic RS flip-flop: basic RS flip-flop has the functions of setting, resetting and holding (memory). Flip-flop is often used to strengthen data integrity constraints and business rules, etc. RS flip-flop is generally used to resist switch jitter.

Principle

1. Synchronous RS flip-flop: when the state of the input terminal (S, R) changes, and only when the clock signal input has a square wave signal, the synchronous RS flip-flop state will change. That is, when the clock pulse falls, the trigger will change the output state according to the input state, and vice versa.

2. Basic RS flip-flop: when the two inputs of the flip-flop are added with different logic levels, the two outputs Q and Q have two complementary stable states. Generally, the state of the flip-flop Q-terminal is regarded as the state of the flip-flop. It is usually called that the flip-flop is in a certain state, which actually refers to the state of its Q terminal.

structure

1. Synchronous RS flip-flop: compared with conventional RS flip-flop, synchronous RS flip-flop has one more terminal, which is called clock signal input terminal support structure, which can make synchronous RS flip-flop change its output state according to clock pulse timing.

2. Basic RS flip-flop: the basic RS flip-flop is composed of two non-gates and closed by positive feedback, or it can be closed by positive feedback with two or non-gates.

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