Some scientists say humans were the inventors of the first sign language. Before spoken language, people most likely used hand gestures. They pointed and created signs for things they couldn’t talk about. Before ASL, sign language had been used by some communities in the US. In the US, hearing families with deaf children would use hand gestures. As early as 1541 there were reports that the natives had developed a language of hand gestures to communicate between groups of different languages
o Braille is a worldwide system of writing used by visually impaired people. Braille has 63 characters, each made up of 1-6 raised dots. Braille characters are embedded in lines on paper and read by running your fingers over the raised dots. Louis Braille, who became blind when he was 3, came up with the system in 1824 when he was at the Institution Nationale des Jeunes Aveugles, in Paris France.
Morse Code, a system for representing letters of the alphabet, numbers, and punctuation marks by an arrangement of dots, dashes, and spaces. The codes are sent as electrical pulses of different lengths or visual signals, such as flashing lights. It was invented to make long distance communication instantaneous and understandable
A typewriter was a mechanical keyboard to imprint characters on a piece of paper by typing individual keys with ink. They were widely used for business communications, newspapers and personal communication up until the invention of modern day personal computer in 1980
Records were the primary medium used for music distribution in the 20th century. It was to be used with the phonograph cylinder from the late 1880s. The bumps you can see on a record are like a type of print of the sound waves left on the record. Since the 1990s, records continue to be made and sold, less frequently but are especially used by DJs and released by artists sometimes
Gmail is a free email service developed by Google. Their users can access Gmail on the internet and using third-party programs such as the App Store, Google Play store Gmail started as a limited beta released on April 1, 2004 and ended its testing phase on July 7, 2009 and opened its services to the public
Instagram is a social media platform that allows its users to post, like and comment on photos and videos from their lives, but also direct message and sent photos and videos to others they follow.
iMessage allows apple users to send texts, documents, photos, videos, contact information, and group messages using wifi to other iOS or macbook users. iMessage is an alternative to the SMS and MMS messaging for users with devices running iOS 5 or later. The "Send as SMS" setting will cause the message to be sent by SMS if the sender does not have an active wifi connection. If the receiver has no Internet connection, the message was stored on a server until they get wifi
Snapchat is a messaging app that lets its users send pictures and videos back and forth that disappear after they're opened. It's said to be a "new type of camera" because the original function is to take a picture or video, add face filters, colour lenses or other effects and share them with your friends
Discord is basically a chat for gamers. Discord is an app designed to help gamers talk to each other in real time. While playing a game on their device, or console or other devices. Their users can log into Discord and enter a group chat with one or more other people so they can talk while they play