CS302 Midterm Online Quiz

CS302-Midterm

1 / 50

A BCD to 7-Segment decoder has

3 inputs and 7 outputs

4 inputs and 7 outputs

7 inputs and 3 outputs

7 inputs and 4 outputs

2 / 50

The Quad Multiplexer has _____ outputs

3 / 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 = 0

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

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

4 / 50

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

AC+B

AB+C

B+C

A+BC

5 / 50

A BCD to 7-Segment decoder has

4 inputs and 7 outputs

3 inputs and 7 outputs

7 inputs and 3 outputs

inputs and 4 outputs

6 / 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

Zero

Undefined

7 / 50

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

TRUE

FALSE

8 / 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

9 / 50

TTL based devices work with a dc supply of ____ Volts

3.35.

10 / 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, very low power dissipation

Fast switching speeds, high power dissipation

Low switching speeds, high power dissipation

11 / 50

The OR Gate performs a Boolean _______ function

Addition

Subtraction

Multiplication

Division

12 / 50

If“1110” is applied at the input of BCD-to-Decimal decoder which output pin will be activated:

14th

2nd

4th

No output wire will be activated

13 / 50

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

16-bit

8-bit

7-bit

2-bit

14 / 50

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

15 / 50

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

16 / 50

The binary value “1010110” is equivalent to decimal __________

17 / 50

Consider a circuit consisting of two consecutive NOT gates, the entire circuit belongs to a CMOS 5 Volt series, if certain voltage is applied on the input, the output voltage of Logic high signal (VoH) will be in the range of _______ volts.

4 to 4.5

0 to 3.5

4.5 to 5

0 to 4.5

18 / 50

The GAL22V10 has ____ inputs

19 / 50

A Demultiplexer is not available commercially.

FALSE

TRUE

20 / 50

The binary value “1010110” is equivalent to decimal __________

21 / 50

The main use of the Multiplexer is to

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 Single source and to route it to a multiple Destinations

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

22 / 50

The Quad Multiplexer has _____ outputs

23 / 50

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

24 / 50

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

Demorgan‟s Law

Associative Law

Commutative Law

Distributive Law

25 / 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 CMOS is higher than of TTL

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

26 / 50

An S-R latch can be implemented by using _________ gates

NAND, NOR

AND, OR

NAND, XOR

NOT, XOR

27 / 50

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

28 / 50

The diagram given below represents __________

Product of sum form

Sum of product form

Associative law

Demorgans law

29 / 50

The binary value of 1010 is converted to the product term

FALSE

TRUE

30 / 50

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

+7 to -8

+9 to -8

-9 to +8

+8 to -7

31 / 50

Sequential circuits have storage elements

TRUE

FALSE

32 / 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=1

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

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

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

33 / 50

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

+8 to -7

+7 to -8

-9 to +8

+9 to -8

34 / 50

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

1100

1010

1000

35 / 50

Caveman number system is Base _5 number system

36 / 50

The Unsigned Binary representation can only represent positive binary numbers

FALSE

TRUE

37 / 50

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

38 / 50

A particular Full Adder has

3 inputs and 2 output

2 inputs and 3 output

3 inputs and 3 output

2 inputs and 2 output

39 / 50

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

TRUE

FALSE

40 / 50

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

Composite

Product

Min

Sum

41 / 50

The Quad Multiplexer has _____ outputs

42 / 50

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

TRUE

FALSE

43 / 50

GAL is an acronym for ________.

Generic Array Logic

General Array Logic

Giant Array Logic

Generic Analysis Logic

44 / 50

A logic circuit with an output consists of ________.

two AND gates, one OR gate

two AND gates, one OR gate, two inverters

two AND gates, two OR gates, two inverters

three AND gates, two OR gates, one inverter

45 / 50

Demultiplexer has

Multiple inputs and multiple outputs.

Multiple inputs and single output.

Single input and multiple outputs.

Single input and single outputs.

46 / 50

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

47 / 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

48 / 50

The binary value of 1010 is converted to the product term

FALSE

TRUE

49 / 50

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

8-bits

16-bits

64-bits

32-bits

50 / 50

The Quad Multiplexer has _____ outputs

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The average score is 44%