ASCII (american standard code for information interchange code): american standard code for information interchange code is a computer coding system based on Latin alphabet, which is mainly used to display modern English and other Western European languages. This is the most common information exchange standard, which is equivalent to the international standard ISO/IEC646.
ASCII was originally published as a standard type in 1967 and last updated in 1986. Up to now, * * * has defined 128 characters.
In a computer, all data should be represented by binary numbers when stored and operated (because the computer uses high and low levels to represent 1 and 0 respectively). For example, 52 letters (including capital letters) such as A, B, C and D, numbers such as 0, 1, and some commonly used symbols (such as *, #, @, etc. ) It's all in the computer.
Of course, everyone can agree on their own set (this is called coding), and if everyone wants to communicate with each other without causing confusion, then everyone must use the same coding rules, so the relevant standardization organizations in the United States have introduced ASCII coding, which uniformly stipulates which binary numbers are used to represent the above common symbols.