The specific order is: 48~57 are ten Arabic numerals from 0 to 90; 65~90 are 26 uppercase English letters; The number 97~ 122 is 26 lowercase English letters.

ASCII code coding function:

Its function is to make users understand computer information more easily and smoothly.

In a computer, information is expressed in binary, which is difficult for users to understand. Because of this, in order to optimize and improve the user experience, computers are equipped with input and output devices. The application purpose of these devices is to display information in a readable form so that people can read and understand computer information.

In order to ensure the accurate and standardized information exchange between users and devices, and between devices and computers, it is necessary to formulate a unified and standardized exchange code, which is the reason why ASCII code table is produced, that is, its function is to make users understand computer information more easily and smoothly.