编写程序完成以下功能，当按下4*4键盘区按键时，在数码管上显示实验板上标记的相应数字或字母。-Write a program to perform the following functions, when the 4* 4 keyboard zone button is pressed, the digital display numbers or letters corresponding experimental board marked.

在PIC上用的一个简单的按键扫描函数，结构清晰，用到了结构体和标记-A very practical scanning function keys used in the PIC, the structure is very clear

有关0v7620的图像采集程序，其中有些地方已经用中文或者英文标记出来了，具体内容自己看看吧-The image acquisition program on 0v7620, which in some places have used Chinese or English marked, the specific content of their own have a look.

FlexCAN模块程序-CAN通信程序CANBus实现三个CAN节点进行通信。三个CAN节点分别标记为节点A，节点B，节点C。-FlexCAN module program- CAN CANBus communication program to realize the three communication CAN node.Three markers for the node respectively A CAN node, the node B, C.