E_Business

说明：  C语言程序，ieee标准格式转浮点型数字(c language, ieee to float)

AT89C51驱动直流电机，有仿真跟C语言。直流电机驱动，实现直流电机的正、反转，PWM调速。(AT89C51-driven DC motor, a simulation with the C language. DC motor drives, DC motor forward and reverse PWM speed control.)

pca 用于定时器功能 pca可用于捕捉，定时，pwm输出等功能(pca pca can be used to capture, timing, pwm output for timer function)

超声波测距，可以通过串口助手显示，当小于设定值时，显示0，当大于设定值时，显示1(Ultrasonic Ranging, through serial aides showed that when less than the set value, 0, when greater than the set value, indicating a)

超声波传感器测距 能准确测出物体据传感器之间的距离(this is chaoshengbo ceju ASM)

说明：  msp430g2553按键控制步进电机正反转，加速，启动停止(2553 Control Stepping Motor)

说明：  基于51单片机的DHT11温湿度报警模块，附带源码和仿真。(DHT11 temperature and humidity alarm module based on 51 MCU, with source code and simulation.)

基于C51及SL811读写U盘的开发文档资料,包括芯片数据手册,测试命令及测试工具,电路原理图,配合基于C51及SL811读写U盘的源程序C51_SL811_ModeDisk_Program就可以产生完整的U盘读写模块(Based on the C51 and U disk read and write SL811 development documentation, including the chip data sheet, test orders and test tools, circuit schematics, with the SL811 to read and write based on the C51 and U disk C51_SL811_ModeDisk_Program source can produce a complete U-disk read-write Module)

针对MCS-51单片机的硬件结构和原理、指令系统、汇编、中断、定时器、并行扩展等进行了讲解。(The hardware structure and principle, instruction system, assembly, interrupt, timer and parallel expansion of MCS-51 single chip computer are explained.)

说明：  MFRC522射频读卡器数据手册 IC-S50数据手册 包含相关性能简介(MFRC522 Radio Frequency Card Reader Data Manual IC-S50 Data Manual Contains a Brief Introduction to Related Performance)