Denary → Binary · Theory

Ch 2 · Counting in Binary — card 3 of 4.

To convert denary to binary, subtract the largest column value you can, mark a 1, and repeat. Convert 77:

• 77 − 64 = 13 → put a 1 in the 64 column
• 13 − 8 = 5 → put a 1 in the 8 column
• 5 − 4 = 1 → put a 1 in the 4 column
• 1 − 1 = 0 → put a 1 in the 1 column
• all other columns are 0 → 01001101

What is the denary value of the binary number 00101010?