The full-width half-width converter provides full-width and half-width mutual conversion, full-width and half-width conversion tools, which are very convenient to switch between full-width characters and half-width characters. Full-width means that one character occupies two standard character positions, and half-width means that one character occupies A standard character position, full-width half-width difference.
1, full-width occupies two bytes, half-width occupies one byte
2, full-width is letters and numbers and Chinese characters occupy the same width, half-width is ASCII characters
3, when there is no Chinese character input method, the input alphanumerics and characters are half-width