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DLD Unit 1 _ 1

Total questions: 15

Worksheet time: 29mins

Name
Class
Date
1.

If the decimal number is a fraction then its binary equivalent is obtained by ________ the number continuously by 2.

a)

Dividing

b)

Multiplying

c)

Adding

d)

Subtracting

2.

The representation of octal number (532.2)8 in decimal is ________

a)

(346.25)10

b)

(532.864)10

c)

(340.67)10

d)

(531.668)10

3.

The decimal equivalent of the binary number (1011.011)2 is ________

a)

(11.375)10

b)

(10.123)10

c)

(11.175)10

d)

(9.23)10

4.

An important drawback of binary system is ________

a)

It requires very large string of 1’s and 0’s to represent a decimal number

b)

It requires sparingly small string of 1’s and 0’s to represent a decimal number

c)

It requires large string of 1’s and small string of 0’s to represent a decimal number

d)

It requires small string of 1’s and large string of 0’s to represent a decimal number

5.

The decimal equivalent of the octal number (645)8 is ______

a)

(450)10

b)

(451)10

c)

(421)10

d)

(501)10

6.

The largest two digit hexadecimal number is ________

a)

(FE)16

b)

(FD)16

c)

(FF)16

d)

(EF)16

7.

The octal equivalent of the decimal number (417)10 is _____

a)

(641)8

b)

(619)8

c)

(640)8

d)

(598)8

8.

Convert the hexadecimal number (1E2)16 to decimal.

a)

480

b)

483

c)

482

d)

484

9.

Convert (0.345)10 into an octal number.

a)

(0.16050)8

b)

(0.26050)8

c)

(0.19450)8

d)

(0.24040)8

10.

Convert binary to octal: (110110001010)2 =?

a)

(5512)8

b)

(6612)8

c)

(4532)8

d)

(6745)8

11.

The given hexadecimal number (1E.53)16 is equivalent to ____________

a)

(35.684)8

b)

(36.246)8

c)

(34.340)8

d)

(35.599)8

12.

Binary subtraction of 101101 – 001011 = ?

a)

100010

b)

010110

c)

110101

d)

101100

13.

On multiplication of (10.10) and (01.01), we get ____________

a)

101.0010

b)

0010.101

c)

011.0010

d)

110.0011

14.

What is the addition of the binary numbers 11011011010 and 010100101?

a)

0111001000

b)

1100110110

c)

11101111111

d)

10011010011

15.

Any signed negative binary number is recognised by its ________

a)

MSB

b)

LSB

c)

Byte

d)

Nibble