In the computer, all data are represented as binary digits (bits), and eight binary digits make up one byte. For example, the upper case letter A is 0101001. Numbers however can take several forms.

A file that contains data made up of ASCII characters. It is essentially raw text just like the words you are reading now. Each byte in the file contains one character that conforms to the ...

To represent text in a computer system, we give each character its own special number. This number is called its code. We can then store this code in the computer using binary ones and zeros.