CA Quiz LU9.2

What are the two types of integer representation mentioned in the text?

• Floating Point and Octal

• Binary and Octal

• Twos Complement and Hexadecimal

• Sign-Magnitude and Binary

What is the benefit of using Two's Complement representation?

• Inefficient negation process

• Limited number range

• Complex arithmetic operations

• One representation of zero

How is negation performed in Sign-Magnitude representation?

• Shift all bits to the right

• Take the Boolean complement of each bit

• Add 1 to the LSB

• Invert the sign bit

What is the range of numbers for an 8-bit Two's Complement representation?

• -128 to 127

• 0 to 255

• -255 to 255

• -127 to 128

How is multiplication achieved in binary arithmetic?

• Shift all bits to the left

• Use only addition operation

• Work out partial products for each digit and add them

• Ignore multiplication altogether

What is the result of (-7) + (+5) in Two's Complement representation?

• -5

• 7

• 0

• -2

How is division implemented in computer arithmetic?

• Multiplying the divisor and dividend

• Using only addition operation

• Ignoring the remainder

• Based on long division with repetitive shifting and addition/subtraction

What happens if overflow occurs during addition in binary arithmetic?

• The sign bit is inverted

• The operation is repeated

• The result is truncated

• ALU signals the fact and result is not used

What is the purpose of the Arithmetic & Logic Unit (ALU) in a computer?

• Performs calculations

• Controls the memory unit

• Stores data in registers

• Handles I/O operations

How is the negation of -128 performed in Two's Complement representation?

• 10000000

• 01111111

• 11111111

• 00000001