In digital electronic circuits, binary is directly applied to the realization of logic gates, so binary is used in modern computers and computer-dependent devices. Each number is called a bit. The binary counting system only uses two numbers, 0 and 1, so any element with two different stable states can be used to represent a certain bit of a number.
Extended data:
Octal is widely used in computer systems, such as PDP-8, ICL 1900, IBM mainframe and so on, using 12, 24 or 36 bits. Octal is the basis of these, because their ideal binary abbreviation size can be divisible by 3 (each octal digit represents three binary digits). Four, eight to twelve numbers can simply display the whole machine.
It also reduces the cost and allows the use of numbers in the operator console through a digital tube, a seven-segment display and a calculator. Their use in binary display is too complicated, but decimal display requires complex hardware and hexadecimal display requires more numbers.
However, all modern computing platforms use 16-32 bits, or 64 bits. If 64 bits are used, it will be further divided into octets. In this system, three octets can meet the needs of each byte, and the most important octet represents two binary digits.
The octal representation of 16-bit word requires 6 digits, but the most important octal digit only represents one digit (0 or 1). This means that readable bytes cannot be provided because it is a 4-bit octal number.