CS302 Quiz # 2

1) In 16-input multiplexer, the decoder inputs ____ and ______ enable one out of the four multiplexers.

1. A, D
2. A, B
3. B, C
4. C, D

2) Which of the following expression is in the product-of-sums form

1. AB+CD
2. (AB) (CD)
3. (A + B) (C + D)
4. AB (CD)

3) The Decimal -to-BCD Encoder has _________ output.

1. 16
2. 2
3. 10
4. 4

4) When the fuse of the __________ gate input is blown to set the input to logic high, the output of the XOR gate is opposite of the OR gate output.

1. OR
2. NAND
3. XOR
4. AND

5) For a 3- to -8 decoder how many 2 -to -4 decoders will be required

1. 3
2. 1
3. 4
4. 0

6) The Decimal-to-BCD Encoder has ______ output

1. 16
2. 2
3. 10
4. 4

7) When the fuse of the ________ gate input is blown to set the input to logic high, the output of the XOR gate is opposite of the OR gate output.

1. OR
2. NAND
3. XOR
4. AND

8) For a3-to-8 decoder how many 2-to-4 decoders will be required

1. 3
2. 1
3. 4
4. 2

9) The problem of excessive delayed caused by carry propagation can be reduced by a _________ circuit.

1. Carry Look Ahead
2. Ripple Carry Adder
3. Full Adder
4. Half Adder

10) Why demultiplexer is called a data distributor

1. Single input to single Output
2. One of the inputs will be selected for the output
3. The input will be distributed to one of the outputs
4. The output will be distributed to one of the inputs