CS302 Midterm Online Quiz

CS302-Midterm

1 / 50

NOR Gate can be used to perform the operation of AND, OR and NOT Gate

TRUE

FALSE

2 / 50

A particular Full Adder has

3 inputs and 3 output

2 inputs and 2 output

2 inputs and 3 output

3 inputs and 2 output

3 / 50

Two 2-bit comparator circuits can be connected to form single 4-bit comparator

FALSE

TRUE

4 / 50

All the ABEL equations must end with ________

“ . “ (a dot)

“ $ “ (a dollar symbol)

“ endl “ (keyword “endl”)

“ ; “ (a semicolon)

5 / 50

The AND Gate performs a logical __________function

Subtraction

Division

Multiplication

Addition

6 / 50

The Quad Multiplexer has _____ outputs

7 / 50

The output of the expression F=A+B+C will be Logic ________ when A=0, B=1, C=1. the symbol‟+‟ hererepresents OR Gate.

Undefined

Zero

One

8 / 50

In ANSI/IEEE Standard 754 “Mantissa” is represented by 32-bits bits

64-bits

32-bits

16-bits

8-bits

9 / 50

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

10 / 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

11 / 50

NOR gate is formed by connecting _________

OR Gate and then NOT Gate

AND Gate and then OR Gate

NOT Gate and then OR Gate

OR Gate and then AND Gate

12 / 50

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

+8 to -7

+9 to -8

-9 to +8

+7 to -8

13 / 50

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

14 / 50

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

TRUE

FALSE

15 / 50

Following is standard POS expression

FALSE

TRUE

16 / 50

The Quad Multiplexer has _____ outputs

17 / 50

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

18 / 50

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

1000

1010

1100

19 / 50

The binary value of 1010 is converted to the product term

TRUE

FALSE

20 / 50

A Karnaugh map is similar to a truth table because it presents all the possible values of inputvariables and the resulting output of each value.

TRUE

FALSE

21 / 50

Two 2-input, 4-bit multiplexers 74X157 can be connected to implement a ____ multiplexer.

4-input, 8-bit

2-input, 4-bit

4-input, 16-bit

2-input, 8-bit

22 / 50

The ABEL symbol for “XOR” operation is

23 / 50

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

24 / 50

"Sum-of-Weights" method is used __________

to decode data

to convert from one number system to other

to convert from serial to parralel data

to encode data

25 / 50

Caveman number system is Base _5 number system

26 / 50

A BCD to 7-Segment decoder has

7 inputs and 3 outputs

inputs and 4 outputs

3 inputs and 7 outputs

4 inputs and 7 outputs

27 / 50

The binary value “1010110” is equivalent to decimal __________

28 / 50

A Demultiplexer is not available commercially.

TRUE

FALSE

29 / 50

How many data select lines are required for selecting eight inputs?

30 / 50

The binary value of 1010 is converted to the product term

TRUE

FALSE

31 / 50

The OLMC of the GAL16V8 is _______ to the OLMC of the GAL22V10

Depends on the type of PALs input size

Similar with some enhancements

Different

Similar

32 / 50

The output of the expression F=A+B+C will be Logic ________ when A=0, B=1, C=1. the symbol‟+‟ hererepresents OR Gate.

10 (binary)

One

Zero

Undefined

33 / 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

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

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

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

34 / 50

Which one is true:

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.

Power consumption of CMOS is higher than of TTL

35 / 50

In ABEL the variable „A‟ is treated separately from variable „a‟

TRUE

FALSE

36 / 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

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

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

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

37 / 50

The _______ Encoder is used as a keypad encoder.

Decimal-to-BCD Priority

BCD-to-Decimal

2-to-8 encoder

4-to-16 encoder

38 / 50

An important application of AND Gate is its use in counter circuit

FALSE

TRUE

39 / 50

The diagram given below represents __________

Sum of product form

Demorgans law

Associative law

Product of sum form

40 / 50

A latch retains the state unless

Output is changed

Power is turned off

Clock pulse is changed

Input is changed

41 / 50

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

MicroOperation selectors

OPCODE Selectors

Function Select Inputs

None of given option

42 / 50

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

43 / 50

Demultiplexer has

Multiple inputs and single output.

Single input and single outputs.

Single input and multiple outputs.

Multiple inputs and multiple outputs.

44 / 50

3.3 v CMOS series is characterized by __________ and _________as compared to the 5 v CMOS series.

Low switching speeds, very low power dissipation

Fast switching speeds, high power dissipation

Fast switching speeds, very low power dissipation

Low switching speeds, high power dissipation

45 / 50

A SOP expression is equal to 1 ______________

At least one variable in domain of expression is present.

All the variables in domain of expression are present

When one or more product terms in the expression are equal to 1.

When one or more product terms in the expression are equal to 0.

46 / 50

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

8-bit

7-bit

16-bit

2-bit

47 / 50

Demultiplexer has

Single input and multiple outputs.

Multiple inputs and multiple outputs.

Multiple inputs and single output.

Single input and single outputs.

48 / 50

The main use of the Multiplexer is to

Select data from Single source and to route to single destination

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

Select data from multiple sources and to route to multiple destinations

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

49 / 50

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

TTL

CMOS 5 Series

Power dissipation of all circuits increases with time.

CMOS 3.5 series

50 / 50

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

A=10, B=01

A=01, B=10

A=01, B=01

A=11, B=01

Your score is

The average score is 44%