A Level CS 1.4.1 Data Types - Fixed & Floating Point Binary

What is 6.625 in fixed point binary (4 bits for the whole number / 4 bits for fractional part)?

• 01101010

• 10001010

• 01101100

• 10001100

What is 0.125 in fixed point binary (4 bits for the whole number / 4 bits for fractional part)?

• 10001000

• 00000010

• 00001000

• 00011000

What is 5.5625 in fixed point binary (4 bits for the whole number / 4 bits for fractional part)?

• 01011101

• 01111001

• 01011100

• 01011001

Convert 11011.1001 to denary.

• 27.8125

• 27.5625

• 31.5625

• 31.34375

Which is NOT a disadvantage of fixed point binary numbers?

• cannot represent the range of numbers

• cannot represent the accuracy of numbers

• easier to process

In floating point binary, it holds the detail of the number.

• Mantissa

• Exponent

In floating point binary, it holds the multiplier.

• Mantissa

• Exponent

010110100011 (8 bit signed mantissa / 4 bit signed exponent) what is the decimal number?

• 5.625

• 11.5

• -5.625

• -11.5

100101000011 (8 bit signed mantissa / 4 bit signed exponent) what is the decimal number?

• 9.25

• -9.25

• -6.75

• 6.75

011000001110 (8 bit signed mantissa / 4 bit signed exponent) what is the decimal number?

• 0.1875

• -0.1875

• 96

• -96