In the late 1930s, Claude Shannon showed that by using switches that close for "true" and open for "false," it was possible to carry out logical operations by assigning the number 1 to "true" and 0 ...

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 ...

One method used to convert a denary number into an 8-bit binary number is to mark down the bits needed to form the number in a placeholder grid.