什么是DATA +& amp;数据 - &哪些电线应与数据+和 - ？连接？ [英] what is meant by DATA + & DATA - & which wires should be connected with data + and - ?

问题描述

我设计了一个无线电频率检测器，它检测到输出已通过LED显示的移动信号，现在我已用9伏电池检查电路它是否正常工作，但我想将它与电脑连接，任何建议????


im想把它连接到USB连接器但是，正如我搜索过的USB连接器电缆有4种类型的电线，正电压（V cc） ，接地，数据+和数据 - 实际上我无法理解DATA +&DATA的含义 - 以及哪些导线应该连接数据+和 - ????

i have designed a Radio Frequency Detector it detects the mobile signals the output has been shown through an LED , now i have checked the circuit with 9 volts battery it is working properly , but i want to connect it with computer , any suggestion ???

i m thinking to connect it with a USB connector but , as i have searched there are 4 types of wires in USB connector cable , Positive voltage (V cc) , GROUND , DATA + & DATA - , actually i am unable to understand what is meant by DATA + & DATA - & which wires should be connected with data + and - ????

推荐答案

DATA +和DATA-是在USB连接上传输串行数据的两条线。它们的范围从0V到+ 3V，DATA +上升而DATA-下降，反之亦然。



一般来说，你不能只连接一个稳定输出到任何这些信号：GND和+ 5V用于电源，而不是信号，两个DATA引脚用于比ON / OFF更复杂的传输。我建议您使用并行端口 - 它用于ON / OFF信号，或用于conventionl串行端口上的控制线。使用USB数据线作为开/关信号可能会导致严重问题，包括硬件损坏。

DATA+ and DATA- are the two lines carrying the Serial data on the USB conection. They range from 0V to +3V, with the DATA+ going up while the DATA- goes down and vice versa.

In general, you can''t just connect a steady output to any of those signals: GND and +5V are for power, not signal, and the two DATA pins are intended for much more complex transfers than ON/OFF. I would recommend that you use a parallel port instead - it is intended for "ON/OFF" signals, or the controls lines on a conventionsl serial port. Using USB Data lines for a on / off signal may cause big problems, including hardware damage.

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