**Digital Electronics (Set -1)**

**Question Bank**

**Ql**. Simplify the following expression using Karnaugh's map in product of sum form :

F (A, B, C, D) = Σ (1, 3, 7, 9, 12, 13, 15)

Also, draw the logic circuit for the simplified expression.

**Q2**: Convert the following decimal numbers to binary:

(i) 47.65

(ii) 702.29

**Q3**: What is a Full Adder ? Give the truth-table and draw the logic diagram for the full adder. Also, explain its functioning.

**Q4**: A flip-flop called T flipflop has the following characteristics:

T = 0 No change of state

T = 1 Changes the current state of the flip-flop

How will you construct T flip-flop using R-S flip-flop? Draw the logic diagram also.

**Q5**: What is arithmetic pipelining ? Discuss with an example. Compare and contrast the features,/characteristics of arithmetic pipelining to instruction pipelining .

**Q6**: Compare and contrast the following :

(a) Random Access and Direct Access

(b) Dedicated and Multiplexed Buses

**Q7**: What is a ripple counter ? Explain its working with the help of a logic diagram. Comp are this ripple counter with synchronous counter.

**Q8**: Find out the value of the following.

(i) (11010010)

_{2}= (X)

_{8}

(ii) (AB)

_{16}= (X)

_{2}

**Q9**: Sum of all minterms of a Boolean function of n variables is 1. Prove this statement for n=3.

**Q10**: Construct a master-slave flip-flop using two R-S flip-flops.

**Q11**: Design a 4-bit binary to gray code converter.

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