word electronics is derived from electron mechanics, which
means to study the behavior of an electron under different
conditions of applied electric
The branch of
engineering in which the flow and control of electrons in
vacuum or semiconductor are studied is called electronics.
Electronics can also be defined as the branch of engineering
in which the electronic devices and their utilization are
motion of electrons through a conductor gives us electric
current. This electric current can be produced with the help
of batteries and generators.
device which controls the flow of electrons is called
electronic device. These devices are the main building
blocks of electronic circuits.
have various branches include, digital electronics, analog
electronics, micro electronics, nanoelectronics,
optoelectronics, integrated circuit and semiconductor
vacuum tube was the first electronic component invented by
J.A. Fleming. Later, Lee De Forest developed the triode, a
three element vacuum tube capable of voltage amplification.
Vacuum tubes played a major role in the field of microwave
and high power transmission as well as television receivers.
1947, Bell laboratories developed the first transistor based
on the research of Shockley, Bardeen and Brattain. However,
transistor radios are not developed until the late 1950’s
due to the existing huge stock of vacuum tubes.
1959, Jack Kilby of Texas Instruments developed the first
integrated circuit. Integrated circuits contain large number
of semiconductor devices such as diodes and transistors in
very small area.
Electronic devices are playing a
major role in everyday life. The various electronic
devices we use in everyday life include
computers are using everywhere. At home, computers are used
for playing games, watching movies, doing research, paying
bills and reservation of tickets for railways and airlines.
At school, students use computers to complete their
phones are used for variety of purposes such as for sending
text messages, making voice calls, surfing internet, playing
games, and listening songs.
is an electronic telecommunication device particularly used
for withdrawing money at any time from anywhere. ATM stands
for automated teller machine. The customer can withdraw
money up to a certain limit during anytime of the day or
drive is particularly used for storing large amount of data
and also used for transferring data from one device to
another. For example, the data stored in the computer can be
transferred to the pen drive. The data stored in this pen
drive can be retrieved at anytime.
is an electronic device primarily used for entertainment and
knowledge. It is used for watching movies for entertainment,
news for knowledge, cartoons for children’s.
camera is a camera used for taking pictures and videos. This
images and videos are stored for later reproduction.