https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn en-us 2022-10-17 01:57:12 UTC 2022-10-20 23:06:05 UTC hello@padlet.com s8gtv6t2pz https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2342363007 Cave drawings have used in 40.000.000 BC. First mean of communication registrated in the human history.]]> 2022-10-17 02:00:44 UTC https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2342363007 s8gtv6t2pz https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2342372046 Smoke Signals have used by romans in 150 AC but also have been used by indian. They have been used principaly to military forms to know if a base has been attacked.]]> 2022-10-17 02:08:12 UTC https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2342372046 s8gtv6t2pz https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2342382074 Letters has been invented aproximately 500 BC. It was a paper with a text, then a person took the letter and goes to the  
reciever.]]> 2022-10-17 02:15:58 UTC https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2342382074 s8gtv6t2pz https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2342391832 The radio have been invented in 1890 AC. It was basically a box with an antenna that have some bottons to change the canales and hear the News]]> 2022-10-17 02:22:46 UTC https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2342391832 s8gtv6t2pz https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2349805151 Telegraph has been created in 1845, it  send messages in morse code, principaly used for miltitary things.]]> 2022-10-20 22:49:06 UTC https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2349805151 s8gtv6t2pz https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2349810145 The first desk computer has been created in 1964, the computer is a screen with a keyboard and a mouse, the principally uses of it is matemathics and communication.]]> 2022-10-20 22:56:56 UTC https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2349810145 s8gtv6t2pz https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2349810445 The first cellphone has been created in 1973, it is a portable tool, so you can take it and go with your cellphone to other place. The first cellphone are only for call people.]]> 2022-10-20 22:57:27 UTC https://padlet.com/s8gtv6t2pz/u0lotfw4y6efqttn/wish/2349810445