By Sara Fathima
October 09, 2022
World Post Day
Have been around since before 600 BC. According to historians sending a messenger was a more formal way of sharing information than sending a pigeon.
Was introduced as early as 590 BC by the Persian emperor Cyrus II. Still in use today in the form of private and national courier services to send parcels and letters across the world.
Chosen as reliable messengers because of their homing abilities and, in some cases, speed. They were even used on a large scale during WWII despite the invention of the Telegraph.
Invented by Samuel Morse in the 1830s – used a wire to communicate by making and breaking the electric connection. Some of its working principles are still used in computer networks.
Graham Bell improvised the concept of the Telegraph in 1875 by adding harmonics to a single wire to transmit sound waves across it. The telephone soon replaced the Telegraph.
Were meant to be wireless Telegraphs in the 1950s. These handy gadgets would display a decoded message to the user. The device was rendered obsolete when cell phones were introduced.
ARPANET (Advanced Research Projects Agency Network) – created in 1963 for the US government – was the precursor to the internet. In 1971, Ray Tomlinson sent the first email on an ARPANET system to a specific address using the @ symbol.
Today, communication is real-time. Two individuals connected to the same network can exchange information by typing the text on a screen and triggering a transmission using push technology.