The document provides an overview of key figures and milestones in the history of electronics, highlighting discoveries and inventions significant to the field. It outlines the development of concepts like electric charge, electromagnetic force, and circuits, detailing contributions from notable scientists such as Thomas Edison, Guglielmo Marconi, and John Bardeen. Additionally, it covers basic electronic components, parameters of circuits, and tools required for basic electronics projects.
An introduction to electronics with historical contributions by notable figures like Thales, Coulomb, Volta, and others up to the invention of the integrated circuit.
Overview of basic components in a circuit including potential difference, switches, resistors, capacitors, inductors, and tools needed for electronics projects.
Important electrical parameters such as voltage, current, resistance, and Ohm's Law, with implications for the human body regarding electrical current.
Great People whoContributed in the
Development of Electronics
THALES -. Wrote about the attraction of
straw and dust to fossilized tree sap called
amber ( amber is the greek word for
electron)624 -547 BC
CHARLES COULOMB-. Discovered the force
between electrically charged objects. The
unit of electric charge is coulomb.
1736-1806
3.
History of Electronics
ALLESANDROVOLTA – Discovered that
electricity is produced when two different
metals are in contact with moistened cloth.
The Volt is the unit of potential difference1745- 1827
HANS OERSTED - Determined that magnetic
field is present when current flows in a wire.
Oersted is one unit of magnetism.
1777 - 1851
4.
History of Electronics
ANDREWAMPERE - Discovered the correct
theory of electromagnetic force.
AMPERE is the unit of current.
1775 - 1836
MICHAEL FARADAY- Discovered the
principle of electromagnetic induction
Invented the electric motor.
FARAD is the unit of capacitance.1791 - 1867
5.
History of Electronics
J.J.THOMPSON – Discovered the electron.
The study of the flow of electrons and its
uses is called electronics.
He won the nobel prize for Physics in 19061856 - 1940
GEORGE OHM – Determined the relationship
between current and voltage in an electric
circuit .
OHM is the unit of resistance.1789- 1854
6.
History of Electronics
THOMASALVA EDISON – Invented the
incandescent lamp , phonograph and early
film projector
Patented 1093 inventions.1847 - 1931
SAMUEL MORSE – Invented the telegraph
and the code that bears his name.
Sent the first telegraph message in 18441791 - 1872
7.
History of Electronics
GUGLIELMOMARCONI – Developed the first
practical inventions in radio telegraphy over
long distances.
Received the first trans-atlantic radio signal
in 1901.
Received the nobel prize for Physics in 1908
AMBROISE FLEMING AND LEE DE
FOREST- Invented the vacuum tube
In 1902 . Lee de Forest developed
the vacuum tube amplifier in 1906.
8.
History of Electronics
NickHolonyak, 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.
9.
History of Electronics
JOHNBARDEEN, WILLIAM
SHOCKLEY AND WALTER
BRATTAIN - Invented the
transistor in 1948
Received the nobel prize for
Physics in 1956
John Bardeen William Shockley Walter Brattain
10.
History of Electronics
RobertNorton Noyce
Jack Kilby
ROBERT NORTON NOYCE 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.
Parts of thesimplest circuit
• Potential Difference or Electromotive force ( emf) – pushes
the electrons to move , example : battery
• Conducting Path – for a complete current flow
• Control Element ( switch) – optional – for turning on or off
the current
• Load ( Resistance) – the one that converts the electrical
energy into another form example: bulb or resistor
Basic Parameters ofa Circuit
• Voltage or emf ( V) – the force that pushes the
electrons to move, measured in volts ( V)
• Current ( I) – the amount of charges flowing in the
circuit / device , measured in ampere ( A)
• Resistance ( R) – the opposition to the flow of
current , measured in ohms ( Ω)
Ohm’ s Law
V = IR