Counting in base 2 - JSS1 Mathematics Lesson Note

Counting in base 2 involves using only two digits: 0 and 1. Just like in base 10 (decimal), where each digit represents powers of 10 (1, 10, 100, etc.), in base 2, each digit represents powers of 2 (1, 2, 4, 8, etc.).

For example:

0 in binary is 0 in decimal.

1 in binary is 1 in decimal.

10 in binary is 2 in decimal.

11 in binary is 3 in decimal.

100 in binary is 4 in decimal.

And so on.