Sequential Logic Gates. As standard logic gates are the building blocks of combinational circuits bistable latches and flip flops are the basic building blocks of sequential logic circuits. Sr flip flop has two stable states in which it can store data in the form of either binary zero or binary one.
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Thus the output generated by the sequential circuit depends not only on the present state of the input but also on the previous outputs. It is basically s r latch using nand gates with an additional enable input. It is then called a sequential logic system since its output can be influenced by its previous state s i e.
Both the inputs and outputs can reach either of the two states.
Sequential logic gates digital systems employ a number of devices that are not classified specifically as logic gates. The sr flip flop is one of the fundamental parts of the sequential circuit logic. Logic 0 low or logic 1 high. The sequential circuit involves usage of feedback loops with the help of this the state of the previous output is recorded.
