Yea, that's absolutely right! It is the purpose which decides which equipment or device shall we use. In a general scenario every information is in bits and every bit is an electrical signal which can have only one value among the two. So, every information is just a combination of these bits and, hence therefore electrical signals 😀Jeffrey SamuelIn real world almost every bit is a stored as a electric signal. There are several ways to convert Bits into electric pulses , without knowing the purpose we cant clearly say which technology should be used to do this simple trick.
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