C语言嵌入式系统编程之屏幕操作，嵌入式系统中经常要使用的并非是完整的汉字库，往往只是需要提供数量有限的汉字供必要的显示功能。例如，一个微波炉的LCD上没有必要提供显示"电子邮件"的功能。-C language programming of embedded systems-screen operation, embedded systems often use the Chinese character library is not complete, often only a limited number of characters needed for the necessary display. For example, a microwave oven in the LCD display there is no need to provide " e-mail"　function.