Understanding Signed Integers and Two's Complement

What symbol is used to represent negative integers in denary?

• Minus (-) symbol before the number

• Plus (+) symbol before the number

• An underline below the number

• A slash (/) through the number

Which method is most commonly used to represent signed integers in binary?

• One's complement

• Unsigned binary

• Two's complement

• Sign and magnitude

How do you find the negative equivalent of a positive number in two's complement?

• Subtract 1 from the binary representation

• Add 1 to the binary representation

• Invert the bits and subtract 1

• Invert the bits and add 1

What is the first step in converting from denary to binary using two's complement?

• Add 1 to the denary number

• Subtract 1 from the denary number

• Invert all the bits

• Convert to binary as if the number was positive

In two's complement, how is subtraction performed?

• By adding the two's complement of the subtrahend

• By using one's complement of the subtrahend

• By directly subtracting the binary numbers

• By converting to denary and then subtracting

What does the range of values in two's complement depend on?

• The number of bits used

• The method of conversion from denary

• Whether the numbers are positive or negative

• The type of operation (addition or subtraction)

Which of the following is a correct step in converting from binary to denary using two's complement?

• Add 1 to the binary number before conversion

• Identify if the leftmost bit is 1 (negative) and proceed with conversion

• Invert all bits and then convert to denary

• Multiply each bit by two and sum the results

What is the result of adding two negative numbers in two's complement?

• The absolute sum of the two numbers

• A smaller negative number

• A larger negative number

• A positive number