Binary to denary

Question 1

How do you convert binary to denary?

Answer 1

You write number 1 to 128 going up by *2 starting from the right side of the page, wherever there is a one, you see what column it is and then write down the number, do this until you have covered all 1’s in the 8 bit number. Then add them up and you get your denary number

Question 2

11111111 is an 8 bit binary number, convert it to denary without a calculator

Answer 2

255, This is because it is one bellow the 9th bit which is 256

Question 3

10101010 is an 8 bit denary number, convert it without a calculator

Answer 3

170. This is because you have 128, 32, 8 and 2 these together make 170

Question 4

01101111 is an 8 bit binary number convert it do denary

Answer 4

111. This is because we have a 64, 32, 8, 4, 2 and 1

Question 5

What does it mean when there’s a one at the end?

Answer 5

When we have a 1 as the last digit on the denary number, it will alway be an odd number