What is Electricity?
Electricity is the flow of electrical energy or electrons through some conductive material
(wire).
Electricity is used every day in every home to drive things like an electric motor, power
appliances
such as electric gates, computers, televisions, air conditioners, phone chargers and lamps.
Electronics is the science of controlling electrical energy electrically, in which the electrons
have a
fundamental role.
Electronics devices use electricity to do certain functions.
Electronics deals with electrical circuits that involve active electrical components.
There are two different ways of sending and receiving information-known as Analog
and Digital.
Analog and digital signals are used to transmit information,
usually through electric signals.
In both these technologies, the information, such as any audio
or video, is transformed into electric signals.
The difference between analog and digital technologies is
that in analog technology, information is translated into electric
pulses of varying amplitude. In digital technology, translation of
information is into binary format (zero or one) where each bit is
representative of two distinct amplitudes.
These two types of signals are like different electronic
languages; some electronic components are bi-lingual (Digital
& Analog) while others can only understand and speak one of
these languages.
Analog signals have an infinite (endless) numbers of values.
Digital signals are finite (either on or off).