Abstract
The single-chip microcomputer, collects CPU, RAM, ROM, the counting and many kinds of connections in a body. It has been published since the 70's of 20th century and has high performance, so it attracts lots of people’s attention. Its volume is small，the weight is light，the capacity of resisting disturbance is strong，the environmental challenge is not high，the price is not expensive and the development is easy, for that, it is widely used in the intelligent production and the industrial automation.
Because Liquid Crystal Display (LCD) has many merits , such as small bulk ,tiny weight , long life , and no electromagnetic radiation , and it consumes low power ,it has been an ideal display for all kinds of carry-home electron info products. LCD has been widely used in these products that are embedded a single chip.
This topic through the MCS-51 single chip to achieve the LCD display, the use of assembly language programming, you can achieve the following functions: rolling display of Chinese characters, and can show selective button. The design of the display system by the LCD display circuit, buttons to adjust the circuit composed of two parts. 51 single-chip programmable via software on the LCD screen in the realization of LCD12864 rolling display of Chinese characters; the user can select through the key elements required to show We can learn the basic principles of the AT89C51 from this text. It is good for us to realize the function of the base pins and the function in the circuit. This article also discourses the working principles of the LCD12864, we can understand their software design procedure from this passage.
