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COMPUTER-Charles Babbage
A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming. Modern computers have the ability to follow generalized sets of operations, called programs. These programs enable computers to perform an extremely wide range of tasks. -
Telegraph-David Alter
was a point-to-point text messaging system, used from the 1840s until better systems became widespread.[1] It used coded pulses of electric current through dedicated wires to transmit information over long distances. It was the first electrical telecommunications system -
Telephone-Alexander Graham Bell
The telephone is a telecommunication device designed to transmit acoustic signals at a distance by means of electrical signals. It was invented by Antonio Meucci, who in 1854 built his first prototype -
Radio-Guillermo Marconi
Radio is the technology of signaling and communicating using radio waves. -
Television-Jonh logie baird
Television was invented by John Logie Baird in 1923 in Hastings, England, and the first television image was broadcast by Baird in 1926. The images, which were initially dotted and flickering, were developed by Baird. -
Mobile phone-Martin Cooper
is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. -
TABLET-Jeff Hawkins
is a mobile device, typically with a mobile operating system and touchscreen display processing circuitry, and a rechargeable battery in a single, thin and flat package. Tablets, being computers, do what other personal computers do, but lack some input/output (I/O) abilities that others have.
