universal keyboard

In the instrument, timer 555 is used to determine the charge time of capacity parasitizing in broken cable, and dual MCU is used to replace the using of universal keyboard interface element 8279 to reduce cost and to expand input and output port.

测试装置采用555定时器测量断线的电容的充电时间，采用双MCU的电路结构代替使用健盘通用接口模块8279，达到降低成本和扩充输入输出口线的目的。

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Experience in Remote Control related products such as Wireless Keyboard, Gamepad, Universal Protocols RC Learnable RC.

具备遥控器相关产品诸如无线键盘，游戏手柄，万能遥控器以及学习型遥控器的相关经验。

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The design of software is finished based on the completed design of universal hardware platform, including signal source module, terminal module, modulation module, demodulation module, controller module and LCD/ keyboard module.

在完成通用硬件平台设计的基础上，完成了实验系统的软件设计，包括信号源模块、终端模块、调制模块、解调模块、控制器及液晶键盘模块共六部分。

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