CS302 Midterm Online Quiz

CS302-Midterm

1 / 50

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

1010

1000

1100

2 / 50

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

FALSE

TRUE

3 / 50

A particular Full Adder has

2 inputs and 3 output

3 inputs and 2 output

2 inputs and 2 output

3 inputs and 3 output

4 / 50

The Quad Multiplexer has _____ outputs

5 / 50

3.3 v CMOS series is characterized by __________ and _________as compared to the 5 v CMOS series.

Low switching speeds, high power dissipation

Fast switching speeds, high power dissipation

Fast switching speeds, very low power dissipation

Low switching speeds, very low power dissipation

6 / 50

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

NOT

XOR

AND

7 / 50

Caveman number system is Base _5 number system

8 / 50

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

AND

XOR

NOT

9 / 50

The Quad Multiplexer has _____ outputs

10 / 50

The ABEL symbol for “OR” operation is

11 / 50

A Demultiplexer is not available commercially.

FALSE

TRUE

12 / 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

13 / 50

The binary value “1010110” is equivalent to decimal __________

14 / 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.

FALSE

TRUE

15 / 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________.

Clear

SET

Invalid

RESET

16 / 50

The expression _________ is an example of Commutative Law for Multiplication.

A+B=B+A

AB=BA

AB+C = A+BC

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

17 / 50

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

None of the given options

E2CMOS

TTL

CMOS+

18 / 50

The diagram given below represents __________

Sum of product form

Product of sum form

Demorgans law

Associative law

19 / 50

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

23 (2 raise to power 3)

20 (2 raise to power 0)

21 (2 raise to power 1)

24 (2 raise to power 4)

20 / 50

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

NOT, XOR

NAND, NOR

AND, OR

NAND, XOR

21 / 50

The binary value “1010110” is equivalent to decimal __________

22 / 50

The _______ Encoder is used as a keypad encoder.

Decimal-to-BCD Priority

4-to-16 encoder

BCD-to-Decimal

2-to-8 encoder

23 / 50

A particular Full Adder has

3 inputs and 3 output

2 inputs and 3 output

3 inputs and 2 output

2 inputs and 2 output

24 / 50

The binary value “11011” is equivalent to __________

E2.

25 / 50

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

+8 to -7

+9 to -8

+7 to -8

-9 to +8

26 / 50

A BCD to 7-Segment decoder has

7 inputs and 3 outputs

4 inputs and 7 outputs

3 inputs and 7 outputs

7 inputs and 4 outputs

27 / 50

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

28 / 50

The binary value of 1010 is converted to the product term

FALSE

TRUE

29 / 50

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

XOR

AND

NOT

30 / 50

The Quad Multiplexer has _____ outputs

31 / 50

Sequential circuits have storage elements

TRUE

FALSE

32 / 50

The ABEL symbol for “XOR” operation is

33 / 50

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

A ! B

A & B

A $ BL-21

A # B

34 / 50

3-to-8 decoder can be used to implement Standard SOP and POS Boolean expressions

FALSE

TRUE

35 / 50

TTL based devices work with a dc supply of ____ Volts

3.35.

36 / 50

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

+8 to -7

+9 to -8

-9 to +8

+7 to -8

37 / 50

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

1001

110

111

1111

38 / 50

Which one is true:

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

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

39 / 50

The diagram given below represents __________

Associative law

Demorgans law

Sum of product form

Product of sum form

40 / 50

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

1100

1010

1000

41 / 50

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

64-bits

32-bits

16-bits

8-bits

42 / 50

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

43 / 50

The binary value “1010110” is equivalent to decimal __________

44 / 50

"Sum-of-Weights" method is used __________

to decode data

to encode data

to convert from serial to parralel data

to convert from one number system to other

45 / 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 = 0

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

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

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

46 / 50

A particular Full Adder has

2 inputs and 2 output

3 inputs and 2 output

3 inputs and 3 output

2 inputs and 3 output

47 / 50

The GAL22V10 has ____ inputs

48 / 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 = 1, A < B = 0, A = B = 0

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

49 / 50

The binary value of 1010 is converted to the product term

FALSE

TRUE

50 / 50

A latch retains the state unless

Output is changed

Clock pulse is changed

Input is changed

Power is turned off

Your score is

The average score is 44%