small topic of digital electronics

1. Difference between combinational and sequential circuit and their concepts related to real time Damodar panigrahy ETC

2. contents Combinationational circuit examples of real type related to concept of combinational circuit Circuit examples of combinational circuit Sequential circuit examples of real type related to concept of Sequential circuit Circuit examples of Sequential circuit difference between combinational circuit and sequential circuit

3. Combinationational circuit The circuit whose output at any instant depends only on the input present at that instant only is known as Combinationational circuit this type of circuit has no memory unit Combinationational circuit only depend up on the present input

4. examples of real type related to concept of combinational circuit Generally engineering students prefer night preparation for exam. It is only for exam after that they forget all the things. Means they do not want to remember . So no memory is required for remember all the things. This concept is same as combinational circuit.

5. Circuit examples of combinational circuit half adder : used for add 2 bits. full adder : Used for add 3 bits. magnitude comparator: used for compare 2 binary data (< or > or =). multiplexer : It has n select line,2^n inputs and 1 output. demultiplexer : It has n select line,2^n outputs and 1 input.

6. Sequential circuit The circuit whose output at any instant depends not only on the input present but also on the past output a is known as sequential circuit this type of circuit has memory unit for store past output Sequential circuit depend up on the present input as well as past output.

7. examples of real type related to concept of Sequential circuit Some students prepare or study whole semester for their exam. So they have to remember all the things . so they require memory . This concept is same as sequential circuit.

8. Circuit examples of Sequential circuit Flip flop: It used for store one bit information. Register: It is of 2 types. buffer register: used for store information. Shift register: used for store and shift the information. Counter : Used for count the number of clock pulses .

9. difference between combinational circuit and sequential circuit combinational circuit sequential circuit 1. 1. The circuit whose output at any instant depends only on the input present at that instant only is known as combinationational circuit. 2. This type of circuit has no memory unit . 3. Examples of combinational circuits are half adder, full adder, magnitude comparator, multiplexer, demultiplexere.t.c. The circuit whose output at any instant depends not only on the input present but also on the past output a is known as sequentalcircuit 2. This type of circuit has memory unit for store past output 3. Examples of sequential circuits are Flip flop, register, counter e.t.c.

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