矩阵键盘与液晶显示器外文文献翻译.doc

矩阵键盘与液晶显示器外文文献翻译 () 文献出处： Carl Poy 英文原文 THE DESIGN OF MATRIX KEYBOARD AND LCD DISPLAY BASED ON MCU Carl Poy Abstract The development of microelectronics technology and industrial measure requirement bring a good opportunity for development and research system, which makes it a broad prospects. The equipment has the advantages of small size, single power supply and a variety of output voltage leads it has a special module. Through the analysis of the hardware structure, we can summarizes each module needs.For example,we often go through the keys to realize the control of the electronic device. Small to watch mobile phone, to the TV computer, to a variety of complex instruments, all need to realize various operations through the buttons. This design is an important part of step for the further research, using buttons to control the display , include some modules like LCD 1602 liquid crystal display , 4*4 matrix keyboard , STC89C52single-chip microcomputer and other chips.Combine with the Proteus software, the simulation results are displayed on the LCD in 1602 type of data. KEY WORDS: Single-chip; LCD 1602 liquid crystal display; 4*4 Matrix keyboard 1 Introduction With the development of economy and the progress of science and technology, Microprocessors and peripheral chips have developed rapidly. The newest development of the integrated technology is the CPU chip and external. Like the program memory, data memory, parallel, serial, I/O timing / counter, interrupt controller and other control components are integrated in a chip— single chip. SCM 2 has a manufacturing process CMOS, The smaller lithography process improves integration which make the chip space smaller, lower cost, lower working voltage, lower power consumption. Adopts double CPU structure, increasing the width of data bus, improve the speed and the ability of data processing, a pipeline structure, improve the processing and computing speed, in order to meet the needs of real-time control and processi