毕业设计 篮球赛计时记分器下载 - 电子电工毕业论文（设计） - 资源天下 关键词： LED显示器、单片机AT89C51、计时电路、记分电路、按键开关等. [gap=1513]monolithic integrated circuit AT89C51, timing circuit, scoring electric circuit, pressed key switch and so on.
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卷帘门窗开启自如，有电动遥控、电动按键开关、手摇杆、手拉皮带、弹簧轴驱动等多种开启方式。
Shutter Windows open easily and electrical control, electric button switches, rocker hand, a belt wheel, the spring drive shaft and other open manner.
论文中还给出了开关量输入、开关量输出、通信模块、时钟电路、数据存储器、按键电路和频率跟踪电路等各功能模块的选择方法和设计原理。
And the selection and design of switch-in module, switch-out module, communication module, clock module, data storage module, keys module and frequency detecting module are also discussed.
此外还详细介绍了硬件系统中的滤波电路设计、信号采集电路设计、显示按键单元设计、开关量输入及输出单元设计等。
In addition, details of the hardware system filter circuit design, signal acquisition circuit design, display design of Key modules, digital input and output cell design.
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