…the typewriter works like a set of stamps? Each key triggers a mechanical arm that hits an ink ribbon and then prints the letter on the paper.

…the pager sends text messages through the radio? The user has to call an operator and tell the message to a person who types it up and then sends it through the radio to the receiver’s device.

…the record player operates by means of vibrations? The record player’s needle moves over the grooves etched on the record, and then the vibration generates the sound. The speaker only amplifies the sound coming from the needle.

…the world’s first cell phone could not access the Internet, did not have a camera, and was launched in 1973?

…tube televisions had to use electrons? Electrons are tiny balls invisible to the naked eye. They circle the atom, the particle that makes up all things. An electron gun, or electron emitter, created the images. 

… single-game video games were common? The most famous is Tamagotchi, a pocket-sized game. The objective of the game is to take care of a virtual animal as it grows.

Sources: Mundo Educação, TechTudo, MSN, and InfoMoney

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