When Alexander Graham Bell invented the telephone he was working on a harmonic telegraph. The primary difference between the harmonic telegraph and Bell's telephone is that it could transmit sound. The purpose of the harmonic telegraph was to make it possible to transmit several messages over a single telegraph wire at the same time without interference.
https://www.americanheritage.com/content/voice-heard-round-world
Since then the telephone has evolved and we now have a portable mobile that has many functions. It's like a mini computer that fits in your pocket. We can take calls from the other side of the world. Send emails and letters to people around the world and more. The technology has improved dramatically since the first telephone but we are always searched for the next new phone that has the latest technology . The newest iPhone has facial recognition to unlock your phone. We can FaceTime people and talk to their face through the screen. We are putting a barrier between each other when communicating with one another.
No comments:
Post a Comment