Applications software (also called end-user software)
A subclass of computer software (as opposed to system software) for carrying out a specialized task by using the capabilities of a computer directly to a performed task.
For example, database programs, electronic mail, word processors, media players, and spreadsheets.
Communication Device
Any hand-held or wearable machine or component that attaches to a computer that assists in data transmission.
For example, modems, cables, and ports.
Most of communication devices require a program (device driver) that acts as a translator to convert the general commands from application into specific commands that the device understands.
Computer
A programmable electronic and digital machine that can perform complex procedures and respond to a specific set of instructions or prerecorded list of instructions (program) precisely and reliably. It can store and retrieve large amounts of data in a well-defined manner.
All general computers require these hardware components:
- Memory(ram, magnetic disk, magnetic tape)
- Mass storage device (disk drives and tape drives)
- Input device (keyboard, mouse)
- Output device (display screen, printer, microphone)
- Central processing unit (CPU)
Desktop computer
A personal computer small enough to fit conveniently in one’s workplace. ‘Desktop’ refers specifically to a horizontally-oriented case, it usually have the display screen placed on top to save space on the desktop.
Embedded computer
A specialized computer that is part of a larger system or machine built into a product, usually acts as part of a complete device including hardware and mechanical parts. It only performs the simple or very complex programs needed to work one or a few dedicated functions.
Examples, intelligent controllers for televisions, automobile engines, trains, cameras, cell phones, and personal digital assistants (PDAs)
Graphical User Interface (GUI)
A program interface that takes advantage of the computer’s graphics capabilities to make the program easier to use. It can make the user free from learning complex command languages and easier to move data from one application to another
Example: Microsoft Windows feature the following basic components.
· pointer · icon · desktop · windows· menus ·
Hardware
The physical mechanical, magnetic, electronic, and electrical components (electronic circuits and I/O devices) from which a computer is constructed.
Examples: mouse, keyboard
Internet
A global network connecting millions of computer. It is decentralized by design that transmits data, news and opinion by packet switching using the standard Internet Protocol (IP).
Installing
In computer terminology, putting software on computer or adding hardware components to a computer (installing hardware).
Network
A collection of connected or linked computer systems with the ability to communicate with each other.
Examples: local-area networks (LANs)
