DPSD-important questions

1.Write the truth table of full subtractor

2.How will you convert gray code to its equivalent binary number

3.What is HDL

4.Construct a 4 X 16 decoder with two 3 X 8 decoders

5.What is demultiplexer

6.What is a sequential circuit

7.What are the types of ROM

8.Discuss the truth table and circuit of an octal to binary encoder

9.What will be the maximum number of output for a decoder with a 6 bit data word.

10.Design a full adder using decoder

11.Design circuit which convert BCD to Excess 3 code

12.Design a 4 bit magnitude comparator to compare two 4 bit numbers

13.A combinational circuit is defined by the functions F1 (A,B, C) = ∑ (3, 5, 6,7)

F2 (A,B, C) = ∑ (0,2,4,7). Implement the circuit with a PLA

14.Implement the following function with a multiplexer

F2 (A,B, C,D) = ∑ (0,1,3,4,8,9,15)

(ii) Design a 4 input priority encoder