Computer Arithmetic and Instruction Set

What is the sign-magnitude representation of -13 in 8-bit binary?

• 10001101

• • 11110011

• 11111101

• 00001101

In sign-magnitude format, how is zero represented?

• 00000000

• 10000000

• Both

• None

What is the range of values for an 8-bit sign-magnitude number?

• -127 to +127

• -128 to +127

• -127 to +127 with two zeros

• 0 to 255

Which bit is used to represent the sign in sign-magnitude format?

• Least significant bit

• Second most significant bit

• Most significant bit

• None of the above

What is the main disadvantage of sign-magnitude representation?

• Cannot represent negative numbers

• Complex arithmetic operations

• Uses too many bits

• Less memory efficient

6. What is the 8-bit two’s complement of -45?

• 11010011

• 10101100

• 11001101

• 00101101

What is the range of an 8-bit two’s complement number?

• -127 to +127

• -128 to +127

• 0 to 255

• -255 to +255

Which of the following is a correct two’s complement representation of 0?

• 11111111

• 00000000

• 10000000

• 00000001

What is the 8-bit two’s complement of +75?

• 1001011

• 01001011

• 10101101

• 11111101

How many bits are used for the exponent in IEEE-754 single precision?

• 8

• 10

• 23

• 4