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Test your self number system and logic gates

Total questions: 15

Worksheet time: 20mins

Name
Class
Date
1.

Which of the following decimal numbers is equivalent to the binary number 110112

a)

11

b)

27

c)

15

d)

23

2.

Which of the following octal numbers is equivalent to the binary number 1111101100102

a)

75528

b)

26678

c)

25578

d)

76628

3.

Consider the following statements

A - 2B16 is equivalent to 538

B - 4310 is equivalent to 1010112

C - 1010112 is equivalent to 538

Which of the above statements are true?

a)

A and B only

b)

A and C only

c)

B and C only

d)

All A,B and C

4.

Which is incorrect about coding system?

a)

They use to represent data in the computer

b)

Most personal computers use ASCII or EBCDIC coding system to process data

c)

ASCII uses 7 bits to represent a number and 128 patterns can be made

d)

EBCDIC uses 8 bits to represent a number and 256 patterns can be made

5.

Which of the following has the least value?

a)

110010012

b)

14510

c)

778

d)

4916

6.

If the character 'E' is represented as 10001012 in ASCII coding scheme,what is the ASCII code for character 'B'?

a)

10000012

b)

10000102

c)

10000112

d)

11001012

7.

Which of the following format is used in computers to store data?

a)

Decimal

b)

Binary

c)

Octal

d)

Hexa-decimal

8.

To qualify in an examination ,candidates have to pass one compulsory subjects S1 and one of the three optional subjects S2, S3 and S4 .

Which of the following Boolean expressions correctly represents this scenario?

a)

S1 AND (S2 AND S3 AND S4)

b)

S1 AND (S2 OR S3 OR S4)

c)

S1 OR (S2 AND S3 AND S4)

d)

S1 OR (S2 OR S3 OR S4)

9.

Which of the following represents the ascending order of the four numbers 100011112,1708,4668710,2F16 ?

a)

1708, 100011112, 2F16, 4668710

b)

100011112, 4668710, 1708, 2F16

c)

2F16, 1708, 100011112, 4668710

d)

4668710, 100011112, 1708, 2F16

10.

Consider the following four

numbers presented in different number systems

111100112

F316

3638

24310

which of the following statements is true?

a)

F316 is larger than other three numbers

b)

3638 is smaller than other three numbers

c)

Four numbers are equal to each other

d)

Four numbers are not equal to each other

11.

In the ASCII code ,Character 'Q' is represented as 10100012,what is the option that represents the word 'PUT' in binary form?

a)

10100002 , 10101012 , 10101002

b)

10100012 , 10101012 , 10101002

c)

10100002 , 10100112 , 10101112

d)

10101012 , 10101002 , 10100112

12.

consider the Boolean expression

D = A. B+ Ć

which of the following is correct?

a)

if A=0 and B=1 then D=1 irrespective of what C is

b)

if A=1 then D=1 irrespective of what B and C are

c)

if B=0 then D=0 irrespective of what A and C are

d)

if C=0 then D=1 irrespective of what A and B are

13.

Consider the given logic circuit

If A=1 and output D=0, then which of the following is correct?

a)

B=0 and C=0

b)

B=0 and C=1

c)

B=1 and C=1

d)

B=1 and C=0

14.

Which of the following is the largest?

a)

10011002

b)

10010102

c)

10101012

d)

11000002

15.

A student could select either string hoppers or bread to eat with dhal curry for his breakfast.Which of the following logical operations correctly represent this scenario?

a)

AND followed by OR

b)

OR followed by AND

c)

OR followed by OR

d)

AND followed by AND