HISTORY OF ELECTRONICS.pptx all about electronics

all about electronics

1. Prepared by: Lamberte , C resildo Jr. R and Potot , Joey HISTORY OF ELECTRONICS

2. WHAT IS ELECTRONICS? Electronics as the name implies relating to electrons. The word electronics arrived from electron mechanics. Electrons technically says electrons is an engineering branch that concerns with the flow of current through semiconductor, gas or any form of matter.

3. BRIEF HISTORY OF ELECTRONICS The history of electronics is a story of the twentieth century and three key components. VACUUM TUBE, TRANSISTOR, and the INTEGRATED CIRCUIT. In 1883, T homas Alva Edison discovered the electrons will flow from one metal conductor to another through the vacuum, this discovery of conduction became known as the Edison effect.

4. In 1904, John Fleming applied the E dison effect in inventing the two elements “electron tube” called a diode, and Lee De Forest followed in 1906 with three elements tube, the “triode”

5. In 1915, this triode vacuum tube was used in oscillator circuits as well as in telephone system. The tetrode was invented in 1916 and pentode was invented in 1926 In 1907, Lee de Forest invented a tube which can amplify weak electrical signal, this tube was later named triode vacuum tube.

6. Allesandro Volta (1745-1827)- discovered that electricity is produced when two different metals are in contact with moistened cloth. The volt is the unit of potential difference. Andrew Ampere (1775-1836)- discovered the correct theory of electromagnetic force. AMPERE is the unit of the current.

7. George Ohm (1789-1854)- determined the relationship between current and voltage in an electric circuit. Michael Faraday (1791-1867)- discovered the principle of electromagnetic induction invented the electric motor.

8. Samuel Morse (1791-1872)- invented the telegraph and the code that bears his name. sent the first telegraph message in 1844. Thomas Alva Edison (1847-1931)- invented the incandescent lamp, phonograph and early film projector .

9. J.J. Thomson (1856-1940)- discovered the electron. The study of the flow of electrons and its uses is called electronics. Ambroise Fleming - invented the vacuum tube in 1902. Lee de forest developed the vacuum tube amplifier in 1906.

10. Robert Norton N oyce and Jack Kilby - invented the integrated circuit (IC) in 1958 noyce was one of the founders of INTEL, the largest chip maker. Kilby invented the calculator and won the nobel prize for physics in 2000

11. Nick Holonyak , Jr.- invented the first visible spectrum LED in 1962 while working as a consulting scientist at a general electric company laboratory in Syracuse, new York.

12. APPLICATION OF ELECTRONICS Office Gadgets such as calculators, personal computers, scanners and printers, FAX machine, front projector etc. Home appliances such as washing machine. Refrigerator, air conditioner, microwave and vacuum cleaner etc. Audio and video system such as headphone, VCRs, DVD players, color TVs, microphone and loudspeaker, video game consoles.