Generally speaking, English uses half angle and Chinese uses full angle; Half angle of natural science papers such as mathematics. Turn: Half-angle-refers to the character occupying the standard character position. The usual English letters, numeric keys and symbol keys are all half-angles, and the display code of half-angle is one byte. In the system, the above three characters are regarded as basic codes, so users generally use half-width when inputting commands and parameters. B under what circumstances are full angle and half angle used respectively? Full width takes up two bytes and half width takes up one byte. Half-angle and full-angle are mainly used for punctuation. Full-width punctuation takes up two bytes and half-width punctuation takes up one byte. Whether it is half-width or full-width, Chinese characters still occupy two bytes. Only half-angle punctuation can be used in the source code of programming (excluding the data inside the string). Only half-angle punctuation can be used on computers that do not support languages such as Chinese characters (in this case, there is no concept of full angle at all). For most fonts, the full width looks larger than the half width, which is certainly not the essential difference. The difference between full width and half width. Full width means that letters, numbers and other words occupy the same width as Chinese characters. Half-width is a character in ASCII mode. When there is no Chinese character input method, the input alphanumeric characters and characters are half-angle. When Chinese character input method appears, alphanumeric input defaults to half angle, but punctuation defaults to full angle, which can be changed by clicking the corresponding button on the input method toolbar with the mouse. D About "full-width" and "half-width": Full-width refers to various symbols in Chinese GB23 12-80 (the basic set of Chinese coded character sets for information interchange). Half-width: refers to various symbols in the ASCII code of English documents.

Adopt it