高校问答用什么替代鸡精和味精:英译汉 急（人工翻译） 希望大家能帮帮忙！谢谢！（7）
来源：百度文库 编辑：高校问答 时间：2024/05/13 20:04:43
Analog Port 3
Analog port 3 is used as an analog multiplexing port for the expansion board. You should not use it if the expansion board is installed.
Analog Ports 4 - 7
Analog ports 4-7 have an additional pin and optional electronics on the signal pin (see Figure 10) to support interfacing to infrared emitter-detector sensors,such as the Fairchild QRB1134. The fourth pin connects to ground through a 220 ohm resistor to provide a current limited power circuit for the infrared emitter.
Analog port 3 is used as an analog multiplexing port for the expansion board. You should not use it if the expansion board is installed.
Analog Ports 4 - 7
Analog ports 4-7 have an additional pin and optional electronics on the signal pin (see Figure 10) to support interfacing to infrared emitter-detector sensors,such as the Fairchild QRB1134. The fourth pin connects to ground through a 220 ohm resistor to provide a current limited power circuit for the infrared emitter.
替代(类似)端口3
替代端口3是一个用于扩展卡的多路技术端口.如果你已经安装了扩展卡那么你就不应该再使用此替代端口.
替代端口4-7
替代端口4-7各有一个额外的PIN码(钉/插头/<打印机的>齿/针)和一个在这个信号PIN(参看图表10)上可供选择使用的电子元件.这些端口用来支持连接发射红外信号的传感器,比如有Fairchild QRB1134.第四个接地的端口穿过一个229欧姆的电阻器,这样它就可以给红外信号发射器提供一个限制电流流量的电路了.
(不好意思,因为我不大懂这些说的是什么,所以PIN我实在翻不出来)