440BX开发板 USB pd12通信测试程序

P89C52对SJA1000的经典设计 使用了ZLG的隔离收发一体芯片 不可错过！-P89C52 of SJA1000 classic design uses isolation ZLG transceiver chip not to be missed!

crc计算方法之一，适合于有较大ROM或外部存储器的单片机-unicef.org calculation method, one more suitable for external memory or ROM Microcontroller

液晶屏显示程序，主要对各按键处理做了很好的处理，可随意改动各按键，通讯采用MODBUS ASCII 可以控制台达变频器的起停及速度控制-LCD display program, the main keys to deal with a very good, may be arbitrarily changed the keys, communications using MODBUS ASCII converter can console cease and the speed control

c8051f340 USB传输 固件驱动， c8051f340 USB传输 固件驱动，-transmission c8051f340 USB drive firmware, c8051f340 USB transmission firmware-driven,

该文档是一篇毕业论文，硬件和软件齐全，历时一个月完成，非常不错-This document is a thesis, complete hardware and software, took a month to complete, very good

sd卡(驱动)工作原理分析，对驱动SB卡有很大帮助-sd card (driver) working principle analysis of SB card drivers are very helpful

本系统主要用于旅游景点记录游客人数，并限制旅客的流量。采用红外传感器通过检测人体红外并对通过人数进行计数，通过红外对管将检测到的数据发送至单片机，单片机处理后送至数码管显示，数码管显示的数据即为通过的人数，并通过设定值限制旅客数量。当游客超量是系统将给出相应的提示，禁止游客再进入。以更好的保护旅游景点的生态环境。-This system is mainly used for tourist attractions recording the number of visitors and limit the flow of tourists. Use of infrared sensors by detecting the human body by infrared and number of people count on the tube will be detected by infrared the data sent to the MCU, MCU after treatment sent to the digital LED display, digital LED display of the data shall be the number of through and through setting limits the number of passengers. When the visitors over-the system will give the appropriate prompts to prohibit visitors from re-entering. To better protect the tourist attractions of the ecological environment.

可编程微波炉系统 -Programmable microwave system

RS232通信程序，是PC机与单片机之间的通信-RS232 communication program is the PC machine with single-chip communication between

这是 12864LCD的技术文档 大家可以参考一下-This is the technical documentation 12864LCD we can refer to