流水灯、数码管、按键、液晶显示器LCD驱动程序和RS232串口.docx

引言单片机(微控制器)是一种集成电路芯片,是采用超大规模集成电路技术与数据处理能力的中央处理器CPU,只读存储器ROM,各种各样的I / O口和中断系统、定时器/计数器功能(可能包括显示驱动电路、脉宽调制电路,模拟多路复用器和A / D转换器电路)集成到一块硅组成的小型和完美的微机系统,广泛应用于工业控制领域。自1980年代以来,8位单片机,发展到现在的300高速单片机。以其极高的性价比,是人们的注意和关心,应用很广,发展很快。单片机体积小、重量轻、抗干扰能力强、环境要求不高,成本低,可靠性高,灵活性好,开发较为容易。由于这些优势,在我国单片机已广泛应用于工业自动化控制、自动检测、智能仪器仪表、电力电子、机电一体化设备和其他方面,最典型的是单片机51单片机。在本次课程设计中以STC89C52芯片为核心,辅以必要的电路,设计了流水灯、数码管、按键、液晶显示器LCD驱动程序和RS232串口程序。同时系统硬件设计简单、稳定性高、价格低廉等优点。关键词:液晶显示器,STC89C52,RS232MCU (Microcontrollers) is A kind of integrated circuit chips, is to use very large scale integrated circuit technology with data processing ability of the central processor CPU, ROM, A variety of I/O mouth and interrupt system, timer/counter function (may include display driver circuit, pulse width modulation circuit, analog multiplexer and A/D converter circuit) is integrated into A piece of silicon consisting of A small and perfect microcomputer system, widely used in industrial control field. Since the 1980 s, by the time of the four, 8-bit microcontroller, development to the present 300 m high speed single chip microcomputer. SCM since the 1970 s, with its extremely high cost performance, is very wide, developing very quickly. SCM small size, light weight, strong anti-jamming capability, environmental requirements is not high, low cost,highreliability, good flexibility, development is relatively easy. Because of these advantages, in our country, SCM has been widely used in industrial automation control, automatic detection, intelligent instruments and other aspects, and is most typical in the microcontroller 51 single-chip microcomputer ,The curriculum design through study andapplication of it, STC89C52 chip as the core, supplemented by necessary circuit, designed a light water program, digital tube, key procedures, LCD driver and RS232 serial interface program. At the same time the system has simple hardware design, high stability, price is low wait for an advantage .Key words: liquid crystal display,STC89C52,RS232第一章总体设