C8051F020 realize four production UART port

C51程序-C51 procedures

/// ////差动输入，定时启动，由T2定时//////////////// /////////选择6，7通道为ADC0差动转化通道,其中第6通道为P3.6,第7通道为P.7-/////// Differential input, time to start, from time to time T2 ///////////////////////// choose 6,7 for ADC0 channel difference Dynamic conversion channel, the first of which for the 6-channel P3.6, No. 7 channel for P.7

主要考虑处理速度、功耗、程序存储器和数据存储器的容量、片内的资源，如定时器的数量-Main considerations deal with speed, power, program memory and data memory capacity, on-chip resources, such as the number of timer

功能强大的时钟中断，单片机和FIFO的接口和操作，单片机串口编程问题，纯软件单片机串口，串口通信的单片机程序，程序的多任务和资源复用举例，采用软件定时的计算方法-powerful clock interruption, the 8031 and FIFO interface and operation, the 8031 serial programming, software-only MCU, the MCU serial communication procedures, the procedures for multi-task and resource reuse, for example, regularly use the software method of calculation

usbio的上位机动态连接文件，Ver 2.41-PC usbio the dynamic link file, Ver 2.41

凌阳 lcd 液晶显示程序 显示菜单命令-Sunplus lcd liquid crystal display program displays the menu commands

51单片机 12864液晶 多级菜单编程-51 MCU 12864LCD Menu Programming

讲述了PID的 控制方法和性能指标，技术参数，注意事项。-About PID control methods and performance indicators, technical parameters, note.

430单片机,键盘实验源码,实验通过调试-430 single-chip microcomputer, keyboard-source experiment, experimental, through debugging