CS302 Midterm Online Quiz

CS302-Midterm

1 / 50

A latch has _____ stable states

Four

Two

One

Three

2 / 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

3 / 50

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

7-bit

16-bit

2-bit

8-bit

4 / 50

The _______ Encoder is used as a keypad encoder.

Decimal-to-BCD Priority

BCD-to-Decimal

4-to-16 encoder

2-to-8 encoder

5 / 50

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

CMOS 5 Series

CMOS 3.5 series

TTL

Power dissipation of all circuits increases with time.

6 / 50

The output of an AND gate is one when _______

All the inputs are zero

Any of the input is zero

All of the inputs are one

Any of the input is one

7 / 50

Caveman number system is Base _5 number system

8 / 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 = 1, A < B = 0, A = B = 0

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

9 / 50

The binary value of 1010 is converted to the product term

FALSE

TRUE

10 / 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 ________

11 / 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

12 / 50

A BCD to 7-Segment decoder has

7 inputs and 3 outputs

3 inputs and 7 outputs

4 inputs and 7 outputs

7 inputs and 4 outputs

13 / 50

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

20 (2 raise to power 0)

21 (2 raise to power 1)

23 (2 raise to power 3)

24 (2 raise to power 4)

14 / 50

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

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

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

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

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

15 / 50

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

A=10, B=01

A=01, B=01

A=01, B=10

A=11, B=01

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

Clear

RESET

Invalid

17 / 50

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

18 / 50

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

B+C

AC+B

AB+C

A+BC

19 / 50

The Quad Multiplexer has _____ outputs

20 / 50

Following is standard POS expression

TRUE

FALSE

21 / 50

All the ABEL equations must end with ________

“ . “ (a dot)

“ $ “ (a dollar symbol)

“ ; “ (a semicolon)

“ endl “ (keyword “endl”)

22 / 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

23 / 50

The Quad Multiplexer has _____ outputs

24 / 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)

Undefined

One

Zero

25 / 50

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

32-bits

8-bits

64-bits

16-bits

26 / 50

"Sum-of-Weights" method is used __________

to convert from serial to parralel data

to convert from one number system to other

to encode data

to decode data

27 / 50

The GAL22V10 has ____ inputs

28 / 50

A latch retains the state unless

Output is changed

Power is turned off

Input is changed

Clock pulse is changed

29 / 50

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

30 / 50

"Sum-of-Weights" method is used __________

to convert from serial to parralel data

to encode data

to decode data

to convert from one number system to other

31 / 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 4.5

4.5 to 5

0 to 3.5

32 / 50

GAL is an acronym for ________.

General Array Logic

Giant Array Logic

Generic Analysis Logic

Generic Array Logic

33 / 50

The main use of the Multiplexer is to

Select data from multiple sources and to route to multiple destinations

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

Select data from Single source and to route to single destination

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

34 / 50

Demultiplexer has

Multiple inputs and multiple outputs.

Multiple inputs and single output.

Single input and single outputs.

Single input and multiple outputs.

35 / 50

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

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

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

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

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

36 / 50

The Quad Multiplexer has _____ outputs

37 / 50

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

FALSE

TRUE

38 / 50

The binary value “1010110” is equivalent to decimal __________

39 / 50

High level Noise Margins (VNH) of CMOS 5 volt series circuits is _____________

0.9 V

3.3 V

0.3 V

0.5 V

40 / 50

Demultiplexer has

Multiple inputs and single output.

Single input and multiple outputs.

Single input and single outputs.

Multiple inputs and multiple outputs.

41 / 50

A.(B+ C) = A.B + A.C is the expression of

Demorgan‟s Law

Distributive Law

Associative Law

Commutative Law

42 / 50

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

+9 to -8

-9 to +8

+8 to -7

+7 to -8

43 / 50

Using multiplexer as parallel to serial converter requires ___________ connected to the multiplexer

A counter circuit

A parallel to serial converter circuit

A BCD to Decimal decoder

A 2-to-8 bit decoder

44 / 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

Clear

Invalid

SET

45 / 50

Demultiplexer has

Multiple inputs and multiple outputs.

Single input and multiple outputs.

Single input and single outputs.

Multiple inputs and single output.

46 / 50

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

1100

1000

1010

47 / 50

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

Commutative Law

Demorgan‟s Law

Distributive Law

Associative Law

48 / 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

49 / 50

A BCD to 7-Segment decoder has

3 inputs and 7 outputs

4 inputs and 7 outputs

7 inputs and 3 outputs

inputs and 4 outputs

50 / 50

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

TRUE

FALSE

Your score is

The average score is 44%