-
Telegraph
Developed in the 1830s and 1840s by Samuel Morse
is used to communicate in distance they use electricity for them -
Telephone
Alexander Graham Bell won the first U.S. patent for the device in 1876.Is used to comunicate with other people that are in an other place -
Radio
It is generally recognized that the first radio transmission was made from a temporary station set up by Guglielmo Marconi in 1895 on the Isle of Wight -
Television
In 1927, at the age of 21, Farnsworth completed the prototype of the first working fully electronic TV system, based on this “image dissector.” He soon found himself embroiled in a long legal battle with RCA, which claimed Zworykin's 1923 patent took priority over Farnsworth's inventions is used for enterteinimend especially for kids -
computer
The ENIAC (Electronic Numerical Integrator and Computer) was the first electronic programmable computer built in the U.S. ... Built under the direction of John Mauchly and J. Presper Eckert at the University of Pennsylvania, ENIAC's development and construction lasted from 1943 to full operation at the end of 1945 is used to make things that are virtual -
Mobile phone
The first mobile phone invented for practical use was by a Motorola employee called Martin Cooper who is widely considered to be a key player in the history of mobile phones. ... Cooper made mobile phone history in April 1973 -
tablet
The history of tablet computers and the associated special operating software is an example of pen computing technology, and thus the development of tablets has deep historical roots.The first patent for a system that recognized handwritten characters by analyzing the handwriting motion was granted in 1914. is used same that the computer but without keyboard