CS302 Midterm Online Quiz

CS302-Midterm

1 / 50

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

TRUE

FALSE

2 / 50

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

3 / 50

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

-9 to +8

+7 to -8

+8 to -7

+9 to -8

4 / 50

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

CMOS 5 Series

CMOS 3.5 series

Power dissipation of all circuits increases with time.

TTL

5 / 50

A BCD to 7-Segment decoder has

7 inputs and 4 outputs

7 inputs and 3 outputs

4 inputs and 7 outputs

3 inputs and 7 outputs

6 / 50

A BCD to 7-Segment decoder has

3 inputs and 7 outputs

4 inputs and 7 outputs

inputs and 4 outputs

7 inputs and 3 outputs

7 / 50

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

Power dissipation of all circuits increases with time.

TTL

CMOS 3.5 series

CMOS 5 Series

8 / 50

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

A & B

A # B

A ! B

A $ BL-21

9 / 50

The _______ Encoder is used as a keypad encoder.

4-to-16 encoder

Decimal-to-BCD Priority

2-to-8 encoder

BCD-to-Decimal

10 / 50

The binary value “1010110” is equivalent to decimal __________

11 / 50

Which one is true:

Power consumption of CMOS is higher than of TTL

Both TTL and CMOS have same power consumption

Power consumption of TTL is higher than of CMOS

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

12 / 50

A logic circuit with an output consists of ________.

three AND gates, two OR gates, one inverter

two AND gates, two OR gates, two inverters

two AND gates, one OR gate

two AND gates, one OR gate, two inverters

13 / 50

Sequential circuits have storage elements

FALSE

TRUE

14 / 50

"Sum-of-Weights" method is used __________

to convert from one number system to other

to decode data

to convert from serial to parralel data

to encode data

15 / 50

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

FALSE

TRUE

16 / 50

The GAL22V10 has ____ inputs

17 / 50

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

18 / 50

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

2-input, 8-bit

2-input, 4-bit

4-input, 8-bit

4-input, 16-bit

19 / 50

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

TRUE

FALSE

20 / 50

Demultiplexer has

Single input and multiple outputs.

Multiple inputs and multiple outputs.

Multiple inputs and single output.

Single input and single outputs.

21 / 50

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

A=01, B=10

A=01, B=01

A=10, B=01

A=11, B=01

22 / 50

The ABEL symbol for “XOR” operation is

23 / 50

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

111

1001

110

1111

24 / 50

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

25 / 50

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

Commutative Law

Associative Law

Demorgan‟s Law

Distributive Law

26 / 50

Caveman number system is Base _5 number system

27 / 50

Demultiplexer has

Multiple inputs and single output.

Multiple inputs and multiple outputs.

Single input and multiple outputs.

Single input and single outputs.

28 / 50

A latch retains the state unless

Clock pulse is changed

Output is changed

Input is changed

Power is turned off

29 / 50

Demultiplexer has

Multiple inputs and multiple outputs.

Single input and single outputs.

Multiple inputs and single output.

Single input and multiple outputs.

30 / 50

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

Function Select Inputs

MicroOperation selectors

OPCODE Selectors

31 / 50

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

TRUE

FALSE

32 / 50

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

33 / 50

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

21 (2 raise to power 1)

24 (2 raise to power 4)

23 (2 raise to power 3)

20 (2 raise to power 0)

34 / 50

A SOP expression is equal to 1 ______________

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

All the variables in domain of expression are present

At least one variable in domain of expression is present.

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

35 / 50

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

16-bits

8-bits

64-bits

32-bits

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

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

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

37 / 50

TTL based devices work with a dc supply of ____ Volts

3.35.

38 / 50

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

adding 1 to 1's complement

adding 1's complement twice

calculating 1's complement and inverting Most significant bit

subtracting 1 from 1's complement.

39 / 50

Which one is true:

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

Both TTL and CMOS have same power consumption

Power consumption of CMOS is higher than of TTL

Power consumption of TTL is higher than of CMOS

40 / 50

The ABEL symbol for “OR” operation is

41 / 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________.

Invalid

RESET

SET

Clear

42 / 50

The binary value “1010110” is equivalent to decimal __________

43 / 50

GAL is an acronym for ________.

Generic Analysis Logic

General Array Logic

Giant Array Logic

Generic Array Logic

44 / 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=1,A<B=0,A<B=1

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

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

45 / 50

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

AC+B

AB+C

B+C

A+BC

46 / 50

The Quad Multiplexer has _____ outputs

47 / 50

A particular Full Adder has

2 inputs and 2 output

3 inputs and 3 output

3 inputs and 2 output

2 inputs and 3 output

48 / 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 ________.

Invalid

RESET

Clear

SET

49 / 50

The binary value of 1010 is converted to the product term

FALSE

TRUE

50 / 50

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

Your score is

The average score is 44%