CS302 Midterm Online Quiz

CS302-Midterm

1 / 50

"Sum-of-Weights" method is used __________

to encode data

to decode data

to convert from serial to parralel data

to convert from one number system to other

2 / 50

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

1100

1000

1010

3 / 50

A latch retains the state unless

Input is changed

Output is changed

Clock pulse is changed

Power is turned off

4 / 50

The GAL22V10 has ____ inputs

5 / 50

The diagram given below represents __________

Product of sum form

Sum of product form

Associative law

Demorgans law

6 / 50

The binary value “11011” is equivalent to __________

E2.

7 / 50

The Quad Multiplexer has _____ outputs

8 / 50

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

A=11, B=01

A=10, B=01

A=01, B=10

A=01, B=01

9 / 50

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

A $ BL-21

A # B

A & B

A ! B

10 / 50

A latch has _____ stable states

One

Four

Three

Two

11 / 50

A particular Full Adder has

2 inputs and 3 output

2 inputs and 2 output

3 inputs and 2 output

3 inputs and 3 output

12 / 50

Which one is true:

Power consumption of TTL is higher than of CMOS

Power consumption of CMOS is higher than of TTL

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

Both TTL and CMOS have same power consumption

13 / 50

TTL based devices work with a dc supply of ____ Volts

3.35.

14 / 50

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

32-bits

16-bits

8-bits

64-bits

15 / 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 ________

16 / 50

Tri-State Buffer is basically a/an _________ gate.

NOT

XOR

AND

17 / 50

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

1001

1111

111

110

18 / 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

19 / 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

20 / 50

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

16-bits

32-bits

64-bits

8-bits

21 / 50

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

TRUE

FALSE

22 / 50

The 4-bit 2’s complement representation of “+5” is _____________

1110

1010

1011

10120

23 / 50

Demultiplexer has

Single input and multiple outputs.

Multiple inputs and single output.

Multiple inputs and multiple outputs.

Single input and single outputs.

24 / 50

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

25 / 50

A particular Full Adder has

3 inputs and 2 output

2 inputs and 2 output

2 inputs and 3 output

3 inputs and 3 output

26 / 50

The diagram given below represents __________

Demorgans law

Product of sum form

Sum of product form

Associative law

27 / 50

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

28 / 50

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

Power dissipation of all circuits increases with time.

CMOS 3.5 series

TTL

CMOS 5 Series

29 / 50

A BCD to 7-Segment decoder has

inputs and 4 outputs

3 inputs and 7 outputs

4 inputs and 7 outputs

7 inputs and 3 outputs

30 / 50

Tri-State Buffer is basically a/an _________ gate.

XOR

AND

NOT

31 / 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

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

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

32 / 50

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

TRUE

FALSE

33 / 50

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

Distributive Law

Commutative Law

Demorgan‟s Law

Associative Law

34 / 50

GAL is an acronym for ________.

Giant Array Logic

Generic Analysis Logic

General Array Logic

Generic Array Logic

35 / 50

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

24 (2 raise to power 4)

23 (2 raise to power 3)

21 (2 raise to power 1)

20 (2 raise to power 0)

36 / 50

All the ABEL equations must end with ________

“ ; “ (a semicolon)

“ endl “ (keyword “endl”)

“ . “ (a dot)

“ $ “ (a dollar symbol)

37 / 50

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

0.5 V

0.3 V

0.9 V

3.3 V

38 / 50

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

A+BC

AB+C

AC+B

B+C

39 / 50

"Sum-of-Weights" method is used __________

to convert from serial to parralel data

to encode data

to convert from one number system to other

to decode data

40 / 50

The binary value “1010110” is equivalent to decimal __________

41 / 50

Which one is true:

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

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

42 / 50

The GAL22V10 has ____ inputs

43 / 50

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

NAND, XOR

AND, OR

NAND, NOR

NOT, XOR

44 / 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

45 / 50

A BCD to 7-Segment decoder has

7 inputs and 4 outputs

4 inputs and 7 outputs

7 inputs and 3 outputs

3 inputs and 7 outputs

46 / 50

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

A=11, B=01

A=01, B=01

A=01, B=10

A=10, B=01

47 / 50

A SOP expression having a domain of 3 variables will have a truth table having ____combinations of inputs and corresponding output values.

48 / 50

49 / 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

50 / 50

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

Your score is

The average score is 44%