Deck 1: Number Systems and Binary Codes

Question 1

Any signed negative binary number is recognised by its______________

A)msb
B)lsb
C)byte
D)nibble

Answer 1

msb

Question 2

The parameter through which 16 distinct values can be represented is known as______________

A)bit
B)byte
C)word
D)nibble

Answer 2

word

Question 3

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

Answer 3

multiplying

Question 4

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

Question 5

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

Question 6

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

Question 7

The decimal equivalent of the octal number (645)8 is____________

A)(450)10
B)(451)10
C)(421)10
D)(501)10

Question 8

The largest two digit hexadecimal number is

A)(fe)16
B)(fd)16
C)(ff)16
D)(ef)16

Question 9

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

A)0111001000
B)1100110110
C)11101111111
D)10011010011

Question 10

Representation of hexadecimal number (6DE)H in decimal:

A)6 * 162 + 13 * 161 + 14 * 160
B)6 * 162 + 12 * 161 + 13 * 160
C)6 * 162 + 11 * 161 + 14 * 160
D)6 * 162 + 14 * 161 + 15 * 160

Question 11

100101 × 0110 = ?

A)1011001111
B)0100110011
C)101111110
D)0110100101

Question 12

Perform multiplication of the binary numbers: 01001 × 01011 = ?

A)001100011
B)110011100
C)010100110
D)101010111

Question 13

Divide the binary numbers: 111101 ÷ 1001 and find the remainder

A)0010
B)1010
C)1100
D)0011

Question 14

Divide the binary number (011010000) by (0101) and find the quotient

A)100011
B)101001
C)110010
D)010001

Question 15

Binary coded decimal is a combination of

A)two binary digits
B)three binary digits
C)four binary digits
D)five binary digits

Question 16

The decimal number 10 is represented in its BCD form as______________    

A)10100000
B)01010111
C)00010000
D)00101011

Question 17

Carry out BCD subtraction for (68) - (61) using 10's complement method.

A)00000111
B)01110000
C)100000111
D)011111000

Question 18

When numbers, letters or words are represented by a special group of symbols, this process is called

A)decoding
B)encoding
C)digitizing
D)inverting

Question 19

A three digit decimal number requires______________for representation in the conventional BCD format.

A)3 bits
B)6 bits
C)12 bits
D)24 bits

Question 20

How many bits would be required to encode decimal numbers 0 to 9999 in straight binary codes?

A)12
B)14
C)16
D)18

Question 21

The excess-3 code for 597 is given by______________    

A)100011001010
B)100010100111
C)010110010111
D)010110101101

Question 22

The decimal equivalent of the excess-3 number 110010100011.01110101 is______________          

A)970.42
B)1253.75
C)861.75
D)1132.87

Question 23

In boolean algebra, the OR operation is performed by which properties?

A)associative properties
B)commutative properties
C)distributive properties
D)all of the mentioned

Question 24

The expression for Absorption law is given by

A)a + ab = a
B)a + ab = b
C)ab + aa' = a
D)a + b = b + a

Question 25

DeMorgan's theorem states that______________  

A)(ab)' = a' + b'
B)(a + b)' = a' * b
C)a' + b' = a'b'
D)(ab)' = a' + b