Computers are actually based on base-2 numbers instead of hexadecimals. In a binary system, there are only two numbers: 0 and 1. The basic unit of a computer is the binary bit (bit), which represents the two states of a switch or transistor: on (1) or off (0).
However, when programming and interacting with computers, programmers and engineers often use hexadecimal (base-16) to represent numbers and data. The hexadecimal system uses numbers from 0 to 9 as well as letters from a to f, with a total of 16 symbols. Each hexadecimal number can represent 4 binary bits. For example, the binary number 1101 can be represented as the hexadecimal number d.
The advantage of using hexadecimal is that it can more concisely represent large binary numbers, and at the same time, it is convenient for programmers to do calculations when dealing with computer memory addresses, colors, etc. While binary data is processed internally by computers, hexadecimal as a representation facilitates programmers when interacting with computers.
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Computer technology