Lectures 1-4

Question 1

What is the process for converting decimal to two’s complement?

Answer 1

• Convert the modulus of the value into standard binary
• If original value is positive, finish
• If value was negative, invert all and add 1

Question 2

What is the process for converting two’s complement to decimal?

Answer 2

• Observe MSB (if 1, number is negative)
• If negative, invert all bits and add 1
• Convert binary to decimal

Question 3

What does excess representation use?

Answer 3

Bias

Question 4

What is the process for converting decimal into excess representation binary?

Answer 4

• Add the bias to the value which we want to represent
• Convert this to binary
• Done

Question 5

What is the process for converting excess representation binary to decimal?

Answer 5

• Convert from binary to its decimal equivalent

- Take away bias from the decimal