The-NIOSII-detailed-tutorial

KS0108驱动12864字符型液晶程序(KS0108 LCD driver 12864 Character program)

89c52的串口通信的演示 (89c52 serial communication demonstration)

说明：  ，用来控制带i2c的风扇板及读写e2prom都没问题，但是用来进行两个AVR单片机之间的通信时，有时会出现数据发送和接收错误（单片机AT1281的TWI引脚连接到i2c缓冲器PCA9513上，通信是在ATCA六槽机箱中进行，但是只用了两个槽位，其他的悬空(That is used to control with the i2c fan board and literacy e2prom all right, but used for two AVR of communication between the microcontroller, can appear sometimes sending and receiving data error (SCM AT1281 of TWI pin connected to the i2c buffer PCA9513, communication is in ATCA six slot chassis, but only two slots, other suspended)

msp430的矩阵键盘，通过芯片7289来控制，可以试试，实测通过(fahdlgashgldasjglasjgasgjlklsdjk)

说明：  复旦微芯片个系列书册编程注意事项，用于复旦微芯片的嵌入式底层程序编辑工作(Notes on low power consumption of Fudan microchip)

说明：  单片机上电以后LCD屏上显示欢迎回家， 先验证指纹再验证密码 ，同时验证成功开锁 指纹和密码分别可以验证3次 3次都错蜂鸣器响 ，按下manage键进入管理员模式 可以修改密码 删减指纹，指纹用开关量表示(After the microcontroller is powered on, the LCD screen shows welcome home. First verify the fingerprint and then verify the password. At the same time, verify the successful unlocking fingerprint and password can verify that the buzzer rings three times and three times respectively. Press the management key to enter the administrator mode to modify the password and delete the fingerprint. The fingerprint is expressed by the switch.)

实现智能数字显示仪表。要求8位数码管显示（4位显示测量值，4位显示设定值），4输入按钮（功能选择、数码管选择、数字增加、数字减少），可设定上下限报警（蜂鸣器报警）。K型热电偶（镍铬-镍硅），测温范围为0℃~1000℃。采用比例-积分控制、并用晶闸管脉宽调制驱动1000W电加热器（电源电压为AC220V）。(Intelligent digital display instrument. Asked 8-bit digital display (4 shows measured values, four display settings), 4 input buttons (feature selection, the digital control options, the number increased, the number is reduced), upper and lower limits can be set to alarm (buzzer alarm ). K-type thermocouple (Ni-Cr and Ni- Si), temperature range is 0 ℃ ~ 1000 ℃. Proportional- integral control, and using thyristor PWM drive 1000W electric heater (power supply voltage is AC220V).)

MAX6675最全的资料，包含C51源程序，芯片介绍，技术文档等(MAX6675 the most complete information, including the C51 source code, chip introduction, technical documentation, etc.)

这里给出一个用于测试7279芯片扫描与控制功能的简单例程。(Here is a test for the 7279 chip scanning and control functions simple routines.)

基本按键操作——单键触发8位二进制累加计数器实验(Basic key operation- one-touch trigger 8-bit binary up-counter experiment)