1. Define combinational logic ?

When logic gates are connected together to produce a specified output for certain specified combinations of input variables, with no storage involved, the resulting circuit is called combinational logic.

2. Explain the design procedure for combinational circuits ?

(1) The problem definition.

(2) Determine the number of available input variables & required O/P variables.

(3) Assigning letter symbols to I/O variables.

(4) Obtain simplified Boolean expression for each O/P.

(5) Obtain the logic diagram.

3. Define multiplexer ?

Multiplexer is a digital switch. If allows digitalinformation from several sources to be routed onto a single output line.

4. Define Decoder ?

A decoder is a multiple – input multiple output logic circuit that converts coded inputs into coded outputs where the input and output codes are different.

5. What is binary decoder ?

A decoder is a combinational circuit that converts binary information from n input lines to a maximum of 2^{n} out puts lines.

6. Define Encoder ?

An encoder has 2^{n} input lines and n output lines. In encoder the output lines generate the binary code corresponding to the input value.

7. What is priority Encoder ?

A priority encoder is an encoder circuit that includes the priority function. In priority encoder, if 2 or more inputs are equal to 1 at the same time, the input having the highest priority will take precedence.

8. What do you mean by comparator ?

A comparator is a special combinational circuit designed primarily to compare the relative magnitude of two binary numbers.

Combinational Circuits – Mcq |

Combinational Circuits – Notes |

Combinational Circuits – IQ |

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