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微机原理与接口技术课程设计--------数字式秒表

于 2020-11-30 发布

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基于80x86计算机，8253芯片，8255芯片，8259芯片，键盘，LED动态显示，以及用汇编语言实现的数字式秒表课程设计。数字式秒表是一种用于体育中田径比赛的一种计时装置。数字式秒表拥有以下几点功能： 1：可控制比赛的开始和结束以及继续比赛； 2：可记录成绩，依次排名； 3：可通过按键关闭设备

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standard ANalog tv mode4.60Predefined user-specific standard ctx4.60Measuring the noise channel power and calculating the carrier power/noise power.4.62Frequency setting of the noise channel………4.63Setting the noise channel bandwidth4.64Setting the C/N ratio channel bandwidth4.64Setting the reference level during noise channel measurement.4.65Selecting the c/ N result display..…,…4.65C/N measurement result display4.66Changing the span4.66Correction of inherent noise power4.67Using the R&S FSH in receiver mode4.68Setting the frequencySetting the reference level,,,。.。4.71Setting the bandwidth4.72Setting the detector4.73Setting the measurement time4.73Measurement on multiple frequencies or channels(scan)4.74Measurements using the power sensor4.76Connecting the power sensor……4.76Zeroing the power sensor.4.78Selecting the unit for the power readout4.79Setting the averaging time.……4.80Taking additional loss or gain into account4.81Measuring forward and reflected power∴4.82Zeroing the power 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微机原理与接口技术课程设计--------数字式秒表

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