Data representation - EduqasRepresentation of numbers

Denary place values

In a computer, all data is stored in binary form. A binary digit has two possible values, which are represented by the symbols 1 and 0.

Humans tend to use the denary number system. However, computers work in binary. Denary numbers must be converted into their binary equivalent before a computer can use them.

The denary system has ten symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. The value of each denary place value is calculated by multiplying the previous place value by ten.

So, the value of the number 124 in denary place values is actually:

This gives (1 × 100) + (2 × 10) + (1 × 4) = 124.