Digital Electronics

S-R Flip-Flop

S-R Flip Flop It is basically S-R latch using NAND gates with an additional enable input. It is also called as level triggered SR-FF. For this circuit in output...

Flip-Flops

Flip Flop Flip flop is a sequential circuit which generally samples its inputs and changes its outputs only at particular instants of time and not continuously. Flip flop is...

Introduction to sequential circuits

The combinational circuit does not use any memory. Hence the previous state of input does not have any effect on the present state of the circuit. But sequential circuit...

Encoders

Encoder Encoder is a combinational circuit which is designed to perform the inverse operation of the decoder. An encoder has n number of input lines and m number of...

Decoders

Decoder A decoder is a combinational circuit. It has n input and to a maximum m = 2n outputs. Decoder is identical to a demultiplexer without any data input....

Demultiplexers

Demultiplexers A demultiplexer performs the reverse operation of a multiplexer i.e. it receives one input and distributes it over several outputs. It has only one input, n outputs, m...

Multiplexers

Multiplexers Multiplexer is a special type of combinational circuit. There are n-data inputs, one output and m select inputs with 2m = n. It is a digital circuit which...

Full Subtractors

Full Subtractors The disadvantage of a half subtractor is overcome by full subtractor. The full subtractor is a combinational circuit with three inputs A,B,C and two output D and...

Half Subtractors

Half Subtractors Half subtractor is a combination circuit with two inputs and two outputs (difference and borrow). It produces the difference between the two binary bits at the input...

N-Bit Parallel Subtractor

N-Bit Parallel Subtractor The subtraction can be carried out by taking the 1’s or 2’s complement of the number to be subtracted. For example we can perform the subtraction...