70bb364a-132d-404e-bdca-67eff9c2bacc

VHDL programmes for basic digital circuits. begineers can learn easily

内含C文件及Proteus仿真文件 矩阵键盘输入密码，初始密码为12345678,每按一次键有短滴声,输入密码正确液晶屏显示正确信息并且电机转动，输入密码错误会发出警报，LED灯闪烁，复位取消警报，0--9号键为数字键,10号键为确认键，11号键清除键清除所输入密码或取消修改密码，12、13、14号键实现修改密码功能。(Containing C file and Proteus simulation file Matrix keyboard input password, the initial password is 12345678, every time a key is pressed, there is a short sound, the correct input password LCD screen displays the correct information and the motor rotates, the input password error will send an alarm, LED flashes, reset and cancel the alarm, 0-9 keys for the digital key, 10 keys for the confirmation key, 11 keys to clear the input secret. Code or cancel password modification, key 12, 13, 14 to achieve password modification function.)

说明：  郭天祥TX-1C版的Proteus仿真 三个版本(Guo Tianxiang TX-1C Version of Proeus Simulation Three Versions)

使用DataAdapter对数据库进行操作 将SQL-search.aspx程序可改为使用DataAdapter对数据库进行操作. 程序使用"Dim objAdapt As New OleDbDataAdapter(strcmd,objCon)"创建了DataAdapter对象。(Use DataAdapter to operate the database The SQL-search.aspx program can be changed using the DataAdapter to operate the database. The program uses "Dim objAdapt As New OleDbDataAdapter (strcmd, objCon)" Creating a DataAdapter object. )

说明：  PIC16F877外设驱动timer定时，PWM输出，外部中断，带注释(PIC16F877 peripheral driver timer, PWM output, external interrupt, annotated)

关于51单片机和dac7811芯片之间通信的程序，可以正确模拟SPI串口通信，写入数据(On communication between 51 single chip microcomputer and dac7811 chip procedures, can correctly simulate the SPI serial communication, write data )

用stm32f103rct6mini板，检测温湿度和气体，DHT11温湿度传感器，MQ-2气体传感器，用TFT LCD显示(Stm32f103rct6mini plate was used to detect temperature and humidity and gas, DHT11 temperature and humidity sensor, mq-2 gas sensor and TFT LCD display)

比RS485更精准的can接受通信，基于128单片机开发，对于有志于128通信方面的读者有一定参考价值 (More accurate than the RS485 can accept the communication, based on 128 microcontroller development, communications for aspiring 128 readers have a certain reference value)

说明：  XTW100编程器刷写软件，包括驱动程序和刷写软件。软件支持24/25系列flash，支持256M存储空间。(XTW100 programming tool, includes hardware driver for Windows system. Support 24/25 series flash, up to 256M.)

说明：  使用了STM32f103采用采集正弦波 ，使用DMA进行传输，保证数据的实时性(STM32F103 is used to collect sine wave and DMA is used for transmission to ensure real-time data)