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Technology is the application of scientific knowledge for practical purposes, especially in industry. It can also be broadly defined as the entities, both material and immaterial, created by the application of mental and physical effort in order to achieve some value or to solve real-world problems.

Computers are electronic devices for storing and processing data (normally in binary form), according to instructions fed to it one at a time via some kind of memory.

Computers can be sub-divided into desktops, laptops, servers (web, email, FTP, etc) and embedded controllers.

Computer motherboard
Electronics deals with the design of circuits using various components like transistors, diodes, resistors, capacitors and coils.

It also deals with the behaviour and movement of electrons in semiconductors (silicon, germanium), conductors (wire), vacuum (eg a valve), or gas (eg neon).

Crane used in Engineering
Engineering deals with the application of science, mathematics and technology to produce useful goods and systems.

This could also include Chemical engineering, software engineering (eg programming), control engineering, electrical engineering.

Train of gears
Mechanics is the study of the behaviour of physical objects when subjected to forces or displacements and the subsequent effects on their environment.

This could include engines (electric, petrol, diesel, hydro or wind powered), gears, levers or pulleys.

Jet Transporter
Transport deals with the transfer of people or things from one place to another. This is often used by business to move stock from factories to warehouses to stores to customers.

Types of transport would include cars, vans, trucks, trains, passenger jets, private jets and various boats.

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