很好的代码，好好学学，关于51单片机开发的独立键盘程序

NXP P89V51 PGA硬件生成 PWM 程序... -NXP P89V51 PGA hardware to generate PWM process ...

80C52参考频率计程序，包含中断和定时器典型应用代码段-Reference 80C52 Cymometer procedures, including suspension and timer typical application code segment

《MCS51-ISP单片机学习板实验指导》可以使初学者对MCS51－ISP单片机多一些了解，里面有不少实用的程序- MCS51-ISP Singlechip plate experimental study guide will enable beginners to MCS51-ISP Singlechip more understanding, there are quite a number of practical procedures

PIC上实现的I2C通讯源程序，使用IO口模拟I2C总线时序来实现的。-PIC achieve I2C communications source, I use IO I2C bus timing simulation to achieve.

以Silicon Laboratories公司C8051F230单片机为控制核心，采用16路动态扫描方式进行显示的LED大屏幕显示系统的设计方案。采用大功率三极管TIP127进行行驱动，提高了亮度。单片机通过读取外部总线数据，可实现与上位机协同工作，也可以脱离上位机独立工作。高速的单片机系统可显示图象、文字、数字等多种内容，并且通过优化算法实现了上下左右移动，以及百叶窗等特殊效果。-To Silicon Laboratories, C8051F230 microcontroller to control the core, using 16-way dynamic scan mode to display the LED large screen display system design. Carried out using high-power transistor TIP127 line drive to improve the brightness. MCU by reading the external bus data can be realized with the host computer to work, you can also work independently from the host computer. High-speed microcontroller system can display images, text, numbers, and other content, and by optimizing the algorithm of the up and down and move around, as well as blinds and other special effects.

基于89S51芯片开发的篮球倒计时系统,开发环境KEIL,仿真环境PROTUES-89S51 chip based on the development of basketball countdown system, development environment KEIL, simulation environment PROTUES

本应用笔记描述了一种完全可行且高度灵活的软件应用，使用dsPIC30F 来控制无传感器无刷直流（brushless DC，BLDC）电机。 此软件将dsPIC30F 外设广泛应用于电机控制。所实现的无传感器控制算法特别适用于风扇和泵。-The application notes described a completely feasible and highly flexible software applications to control the use of dsPIC30F Sensorless Brushless DC (brushless DC, BLDC) motor. This software will be widely used in dsPIC30F motor control peripherals. The realization of sensorless control algorithm is particularly applicable to the fan and pump.

EZ-USB FX系列单片机USB外围设备设计与应用.PDF 北航出版社 编著:许和

AVR ATmega48/88/168的详细中文资料说明。-AVR ATmega48/88/168 detailed information on the Chinese.

C8051F系列单片机SPI端口驱动程序，简洁，高效。-C8051F MCU SPI port drivers, simple and efficient.