Matrix-keyboard-lock

计算太阳位置，通过公式！用单片机编译程序！(Calculate the position of the sun through the formula! Microcontroller compiler!)

AD9851驱动程序，采用串行写入方式，STM32写入频率控制字。(AD9851 driver, using serial write mode, STM32 write frequency control word.)

预写入汉字，在彩屏上显示所要显示的汉字。。(Pre-written Chinese characters, Chinese characters to be displayed on the color screen. .)

硬件电路比较简单，3个LED指示灯，5个按键控制上下左右及暂停，LCD显示。总共有20关。设计用到了逻辑门控制电路。(The hardware circuit is simple, 3 LED lights, 5 key control above and below and suspension, LCD display. A total of 20 customs. The design used in the logic gate control circuit. )

此程序为4*4矩阵键盘，键盘自身不带电源电阻，八个接线，在程序中进行需进行软件拉高拉低以便按键扫描。 应用单片机为MSP430F5529。(4* 4 matrix keyboard without power resistors MSP430F5529)

一个可以控制电机的程序 能主管的显示数据(One can control the electric charge of the program can display data)

MSP430F169单片机矩阵键盘扫描程序，用一位共阳数码管显示(MSP430F169 microcontroller matrix keyboard scanning procedures, using a common anode LED display)

文字或句子自動隨機排列.可以有助各位溫習功課和考試(Automatic random words or sentences arranged)

Keil uvision4.0 环境下的MCS-51单片机入门学习例程！(Keil uvision4.0 environment MCS-51 microcontroller started learning routines!)

基于VC++的，以操作文件的方式（CreateFile,WirteFile,ReadFile）来操作串口实现的射频卡门禁系统，实现了包括读卡写卡，寻卡防冲突等功能。(Based VC++ in order to manipulate papers (CreateFile, WirteFile, ReadFile) to operate the serial interface of the RF card access control systems, including the realization of the card reader to write, look for cards anti-collision function.)