CS302 Midterm Online Quiz

CS302-Midterm

1 / 50

Half-Adder Logic circuit contains 2 XOR Gates

TRUE

FALSE

2 / 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 Single source and to route to single destination

Select data from multiple sources and to route to multiple destinations

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

3 / 50

A BCD to 7-Segment decoder has

3 inputs and 7 outputs

7 inputs and 3 outputs

4 inputs and 7 outputs

7 inputs and 4 outputs

4 / 50

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

5 / 50

TTL based devices work with a dc supply of ____ Volts

3.35.

6 / 50

The Unsigned Binary representation can only represent positive binary numbers

TRUE

FALSE

7 / 50

Demultiplexer has

Multiple inputs and multiple outputs.

Single input and single outputs.

Multiple inputs and single output.

Single input and multiple outputs.

8 / 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

9 / 50

NOR gate is formed by connecting _________

NOT Gate and then OR Gate

AND Gate and then OR Gate

OR Gate and then AND Gate

OR Gate and then NOT Gate

10 / 50

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

-9 to +8

+9 to -8

+8 to -7

+7 to -8

11 / 50

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

12 / 50

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

TRUE

FALSE

13 / 50

The _______ Encoder is used as a keypad encoder.

4-to-16 encoder

Decimal-to-BCD Priority

BCD-to-Decimal

2-to-8 encoder

14 / 50

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

15 / 50

GALcan be reprogrammed because instead of fuses __________logic is used in it

TTL

CMOS+

None of the given options

E2CMOS

16 / 50

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

TRUE

FALSE

17 / 50

Which one is true:

Power consumption of TTL is higher than of CMOS

Power consumption of CMOS is higher than of TTL

Both TTL and CMOS have same power consumption

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

18 / 50

The ABEL symbol for “OR” operation is

19 / 50

The GAL22V10 has ____ inputs

20 / 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.

One

Undefined

10 (binary)

Zero

21 / 50

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

AND

XOR

NOT

22 / 50

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

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

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

23 / 50

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

A $ BL-21

A ! B

A & B

A # B

24 / 50

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

25 / 50

The diagram given below represents __________

Sum of product form

Demorgans law

Product of sum form

Associative law

26 / 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

27 / 50

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

24 (2 raise to power 4)

20 (2 raise to power 0)

21 (2 raise to power 1)

23 (2 raise to power 3)

28 / 50

The 4-bit 2‟s complement representation of “-7” is _____________

1001

111

1111

110

29 / 50

"Sum-of-Weights" method is used __________

to encode data

to decode data

to convert from one number system to other

to convert from serial to parralel data

30 / 50

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

32-bits

8-bits

16-bits

64-bits

31 / 50

The AND Gate performs a logical __________function

Subtraction

Division

Multiplication

Addition

32 / 50

The OR Gate performs a Boolean _______ function

Addition

Subtraction

Division

Multiplication

33 / 50

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

1000

1010

1100

34 / 50

The binary value “1010110” is equivalent to decimal __________

35 / 50

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

FALSE

TRUE

36 / 50

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

37 / 50

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

adding 1's complement twice

subtracting 1 from 1's complement.

calculating 1's complement and inverting Most significant bit

adding 1 to 1's complement

38 / 50

The binary value “1010110” is equivalent to decimal __________

39 / 50

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

+7 to -8

-9 to +8

+8 to -7

+9 to -8

40 / 50

A standard POS form has __________ terms that have all the variables in the domain of the expression.

Min

Composite

Sum

Product

41 / 50

The device shown here is most likely a

Parity generator

Multiplexer

Demultiplexer

Comparator

42 / 50

A logic circuit with an output consists of ________.

two AND gates, one OR gate

two AND gates, two OR gates, two inverters

three AND gates, two OR gates, one inverter

two AND gates, one OR gate, two inverters

43 / 50

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

44 / 50

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

45 / 50

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

8-bit

7-bit

16-bit

2-bit

46 / 50

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

CMOS 3.5 series

CMOS 5 Series

TTL

Power dissipation of all circuits increases with time.

47 / 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

48 / 50

A particular Full Adder has

3 inputs and 2 output

2 inputs and 3 output

2 inputs and 2 output

3 inputs and 3 output

49 / 50

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

Different

Similar

Depends on the type of PALs input size

Similar with some enhancements

50 / 50

GAL is an acronym for ________.

Generic Analysis Logic

General Array Logic

Giant Array Logic

Generic Array Logic

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