Inventions

Communication is defined as the imparting and exchanging of information by speaking, writing or some other medium.

Digital is defined as of or using digits.

Analogue is defined as relating to, or being a device in which data are represented by continuously variable, measurable, physical quantities, such as length, width, voltage or pressure.

Electronic is defined as of or worked by streams of electrons flowing through devices, vacuum of gas; of or concerned with electrons or electronics.

All definitions have been sourced from the beloved dictionary.

The Typewriter

The typewriter is a mechanical device that has keys, which when pressed, prints a letter across a piece of paper. In 1866, Christopher Latham Scholes and his partners, Carlos Glidden and Samual Soule, invented the first practical typewriting machine. The typewriter was considered the most significant, everyday business tool, these days it is the computer.

Source from here on 09/08/10

The Clock

The earliest clocks were sundials. These measure the time of day by using the sun. However, they were rather useless during the night which lead to other techniques being used to measure time. Water clocks and astronomical clocks (like the one above) pursued. Now we have such things as the digital clock and the auditory clock, which speaks the time.

Source from here on 09/08/10

The Phonograph

The phonograph was the earliest invention of the radio. It was first invented by Thomas Edison and later improved by Alexander Graham Bell and his cousin Chester Bell, naming it the graphophone. Edison, refusing to collaborate with Bell, again worked on the new phonograph after inventing the light bulb, perfecting it. Eventually the phonograph, over time, has become today's radio.

Source from here on 09/08/10