CS302 Midterm Online Quiz

CS302-Midterm

1 / 50

3-to-8 decoder can be used to implement Standard SOP and POS Boolean expressions

FALSE

TRUE

2 / 50

The ABEL symbol for “OR” operation is

3 / 50

A particular Full Adder has

2 inputs and 3 output

3 inputs and 2 output

3 inputs and 3 output

2 inputs and 2 output

4 / 50

Generally, the Power dissipation of _______ devices remains constant throughout their operation.

CMOS 3.5 series

TTL

Power dissipation of all circuits increases with time.

CMOS 5 Series

5 / 50

The Quad Multiplexer has _____ outputs

6 / 50

The binary numbers A = 1100 and B = 1001 are applied to the inputs of a comparator. What are the output levels?

A>B=1,A<B=0,A<B=1

A>B=0,A<B=1,A=B=1

A > B = 1, A < B = 0, A = B = 0

A>B=0,A<B=1,A=B=0

7 / 50

A SOP expression having a domain of 3 variables will have a truth table having ____combinations of inputs and corresponding output values.

8 / 50

Generally, the Power dissipation of devices remains constant throughout their operation.

CMOS 5 Series

TTL

CMOS 3.5 series

Power dissipation of all circuits increases with time.

9 / 50

In the binary number “10011” the weight of the most significant digit is ____

24 (2 raise to power 4)

21 (2 raise to power 1)

20 (2 raise to power 0)

23 (2 raise to power 3)

10 / 50

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

11 / 50

Tri-State Buffer is basically a/an _________ gate.

XOR

NOT

AND

12 / 50

Circuits having a bubble at their outputs are considered to have an active-low output.

TRUE

FALSE

13 / 50

The binary numbers A = 1100 and B = 1001 are applied to the inputs of a comparator. What are the output levels?

A>B=1,A<B=0,A<B=1

A > B = 1, A < B = 0, A = B = 0

A>B=0,A<B=1,A=B=1

A>B=0,A<B=1,A=B=0

14 / 50

"Sum-of-Weights" method is used __________

to convert from one number system to other

to encode data

to convert from serial to parralel data

to decode data

15 / 50

The Unsigned Binary representation can only represent positive binary numbers

TRUE

FALSE

16 / 50

If an active-HIGH S-R latch has a 0 on the S input and a 1 on the R input and then the R input goes to 0, the latch will be ________.

SET

Invalid

RESET

Clear

17 / 50

A.(B.C) = (A.B).C is an expression of __________

Associative Law

Demorgan‟s Law

Commutative Law

Distributive Law

18 / 50

Demultiplexer has

Single input and multiple outputs.

Multiple inputs and multiple outputs.

Single input and single outputs.

Multiple inputs and single output.

19 / 50

The PROMconsists of a fixed non-programmable ____________ Gate array configured as a decoder.

XOR

NOT

AND

20 / 50

Half-Adder Logic circuit contains 2 XOR Gates

TRUE

FALSE

21 / 50

GAL is an acronym for ________.

Generic Analysis Logic

Giant Array Logic

General Array Logic

Generic Array Logic

22 / 50

The main use of the Multiplexer is to

Select data from Single source and to route it to a multiple Destinations

Select data from multiple sources and to route to multiple destinations

Select data from Single source and to route to single destination

Select data from multiple sources and to route it to a single Destination

23 / 50

If an active-HIGH S-R latch has a 0 on the S input and a 1 on the R input and then the R input goes to 0, the latch will be________.

RESET

Invalid

SET

Clear

24 / 50

A particular Full Adder has

3 inputs and 2 output

2 inputs and 2 output

3 inputs and 3 output

2 inputs and 3 output

25 / 50

The Extended ASCII Code (American Standard Code for Information Interchange) is a _____ code

16-bit

7-bit

8-bit

2-bit

26 / 50

A BCD to 7-Segment decoder has

4 inputs and 7 outputs

inputs and 4 outputs

3 inputs and 7 outputs

7 inputs and 3 outputs

27 / 50

Which one is true:

Power consumption of CMOS is higher than of TTL

Power consumption of TTL is higher than of CMOS

Both TTL and CMOS have same power consumption

Power consumption of both CMOS and TTL depends on no. of gates in the circuit.

28 / 50

The ABEL notation equivalent to Boolean expression A+B is:

A ! B

A # B

A & B

A $ BL-21

29 / 50

The binary value “1010110” is equivalent to decimal __________

30 / 50

Demultiplexer has

Single input and multiple outputs.

Multiple inputs and multiple outputs.

Multiple inputs and single output.

Single input and single outputs.

31 / 50

(A+B).(A+C) =

A+BC

AB+C

B+C

AC+B

32 / 50

Caveman number system is Base _5 number system

33 / 50

The OR Gate performs a Boolean _______ function

Multiplication

Addition

Subtraction

Division

34 / 50

The range of Excess-8 code is from ______ to ______

-9 to +8

+7 to -8

+8 to -7

+9 to -8

35 / 50

A Demultiplexer is not available commercially.

TRUE

FALSE

36 / 50

The 3-variable Karnaugh Map (K-Map) has _______ cells for min or max terms

37 / 50

A BCD to 7-Segment decoder has

7 inputs and 4 outputs

4 inputs and 7 outputs

7 inputs and 3 outputs

3 inputs and 7 outputs

38 / 50

If an active-HIGH S-R latch has a 0 on the S input and a 1 on the R input and then the R input goes to 0, the latch will be________.

Clear

RESET

Invalid

SET

39 / 50

The output A < B is set to 1 when the input combinations is

A=11, B=01

A=01, B=01

A=01, B=10

A=10, B=01

40 / 50

The ecimal “8” is represented as using Gray-Code.

1010

1100

1000

41 / 50

In the Karnaugh map shown above, which of the loops shown represents a legal grouping?

42 / 50

The maximum number that can be represented using unsigned octal system is _______

43 / 50

The diagram given below represents __________

Associative law

Demorgans law

Sum of product form

Product of sum form

44 / 50

The 4-variable Karnaugh Map (K-Map) has _______ cells for min or max terms

45 / 50

The GAL22V10 has ____ inputs

46 / 50

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

47 / 50

The function to be performed by the processor is selected by set of inputs known as ________

Function Select Inputs

OPCODE Selectors

MicroOperation selectors

Function Select Inputs

48 / 50

If we add “723” and “134” by representing them in floating point notation i.e. by first, converting them in floating point representation and then adding them, the value of exponent of result will be ________

49 / 50

The values that exceed the specified range can not be correctly represented and are considered as ________

Parity

Overflow

Sign value

Carry

50 / 50

2's complement of any binary number can be calculated by

calculating 1's complement and inverting Most significant bit

subtracting 1 from 1's complement.

adding 1's complement twice

adding 1 to 1's complement

Your score is

The average score is 44%