Analog signals vary continuously, as with the rays of light forming an image, while digital signals are non-continuous, as with binary numbers.

模拟信号是连续变化的，如形成图像的光线，而数字信号是非连续的，如二进制数。

Photonic computing, which uses analog light signals, is one of the most promising approaches to addressing the issue.

使用模拟光信号的光子计算是解决这个问题最有前途的方法之一。

Sound is an analog signal or wave.

声音是模拟信号或波。

Throughout the 20th century, cable networks expanded, and technology continued to evolve as telephones eventually replaced telegraphs, and the digital data eventually replaced analog signals.

二十世纪，电缆网络扩张技术发展，电话代替了电报，数字信号最终取代模拟信号。

It must be picking up some kind of analog signal.

它一定是接收到某种类比讯号。

Well, one way to do it is as an analog signal.

嗯，一种方法是作为模拟信号。

But modern day devices don’t have that problem, mainly because they mostly use digital signals instead of analog signals.

但是现代设备没有这个问题，主要是因为它们主要使用数字信号而不是模拟信号。

So whether you're trying to transmit an analog signal or a digital signal it really is about how do you communicate numbers using some type of signal.

因此，无论您是尝试传输模拟信号还是数字信号，这实际上都是关于如何使用某种类型的信号来传达数字。

But in case you're curious, and you don't have to understand this to know the difference between analog and digital signals and when they might be useful, this first place is the ones place just as you're used to.

但如果您很好奇，并且您不必了解这一点即可了解模拟信号和数字信号之间的区别以及它们何时可能有用，那么第一个位置就是您习惯的位置。