Transcript What is Electronics?

What is in Electronics?
•Knowledge and Applications of the
motion of Electrons (and Holes) in a
Semiconductor under an applied
Current or Voltage
What is this Application?
• To process signals (electrical current and
voltage) to suit our needs
 What is this processing?
 Add, subtract, magnify, multiply, modify a known
(or given) electrical signal to produce a desired
outcome.
 Outcome? (Almost every sphere of modern
human life has some electronics in it)
Various forms of Outcome
• Sending a picture from one place to another
(Television, Weather images…)
• Sending voice and music over great distances
(radio, mobile phones..)
• Modern ware-fare (radar, stealth fighting,
unmanned aircrafts..)
• Taking care of human (medical and surgical
procedures..) health and well-being
• Computers and data processing
How the Outcomes Pervade Our Lives?
(Electronic Systems and Applications)
Area of Applications
Examples
Communications &
Entertainments
Radios, telephones, TV, CDs, Communication Satellites, Stereos,
Military Communications, VCR, DVDs…
Computers & Calculators
Microprocessors, PCs, Supercomputers, Digital Circuits
Automatic Control
Systems
Space vehicles, guided missiles, robotics, military machines, auto
manufacturing
Automotive Electronics
Electronic ignition systems, antiskid braking systems, computation
and display of performance, automatic suspension adjustment
Radar
Air traffic control, security systems, traffic law enforcement
Integrated Circuits
Design and fabrication of integrated circuits, BJT, MOS, CMOS,
VLSI, DSP, Analog Filters
Big Picture  Small Picture
• Basic Electronics – Electronics I (small picture)
 Magnification of Electrical Signal by Electronic
Devices (Amplifier..) Linear Signal Processing
 Modification of Electrical Signal by Electronic Devices
(Rectifier, Wave Shaper ..) Non-linear Signal
Processing
 Electronic Devices? Diodes and Transistors