44780字符液晶屏驱动演示程序总线方式

华邦winbond单片机头文件，使用winbond单片机时需包含在原文件中

仪器仪表键盘显示模拟系统，用AT89S52芯片作为系统的CPU，控制系统的按键及显示器部分。用8路同相三态双向总线收发器74LS245芯片驱动LED。4X4矩阵键盘作为系统人机交互的重要部分，用于向单片机应用系统输入数据或控制信息，设计4X4矩阵键盘分别对应键码“0-F”。系统可以实现的基本功能包括开机LCD液晶屏幕显示“大专05电子信息X班XXX毕业设计”信息；按下任意一个按键，LCD液晶屏幕显示相应按键的信息。在基本功能的基础上还增加了一个扩展功能，即增加一个LED数码管同步显示相应键码-Show the simulated keyboard instrumentation systems, using AT89S52 chip as a system CPU, system control buttons and display parts. With 8-phase three-state bidirectional bus transceiver 74LS245 chip-driven LED. 4X4 matrix keyboard system as an important part of human-computer interaction, single-chip microcomputer application system used to input data or control information, the design of 4X4 matrix keyboard key code corresponding to

89c52 eprom 的子程序 可以参考一下 -89C52 eprom the subroutine can reference

rc500 c语言库函数，对RC500的开发提供了捷径-rc500 c language library functions, the development of RC500 provides a shortcut

采用UART方式0与LM74通信。 用C8051f020的P0.7作片选，主机通过TXD发送时钟信号，实现同步通信,半双工.RXD 作双向数据线.用六位数码管显示LM74采集的温度值-The use of UART communication mode 0 and LM74. P0.7 used for the C8051F020 chip select, host TXD sent through the clock signal, to achieve synchronous communication, half-duplex. RXD for bi-directional data line. With six digital tube display LM74 temperature collected

1.利用PWM控制占空比实现LED的亮暗。 2.可以用UP DOWM键进行控制亮暗。 -1. The use of PWM duty cycle control to achieve the bright LED dark. 2. Can be used to control button UP DOWM bright dark.

基于uPSD3254A单片机的EPP并口通信技术-based uPSD3254A SCM EPP ICT

avr 单片机串行接口的初始化发送和接收-avr Singlechip initialization serial interface to send and receive

已经条通的程序，一个液晶驱动显示汉字核图片-have been of general procedure, a liquid crystal display Chinese characters driven nuclear Photo

单片机做的小键盘，单片机模拟ps2接口的程序-Singlechip make a small keyboard, single-chip analog interface procedures ps2