Mouse Movements : The mouse
points to the location of the desired item on the screen with the help of a
cursor called mouse pointer.
My Computer : My Computer
gives a quick overview of all the files and programs available in the system.
Any program installed shall get into ‘My computer’ folder automatically.
My Documents : It gives a
quick overview of all the documents saved in the system. Any document that is
saved gets into My Documents folder automatically. Besides these basic
components, many other icons can be kept on the desktop.
Network : It helps to get a
glimpse of what is available with other Neighborhood computers on the network.
Pointing : Pointing refers
to the positioning of the mouse pointer at a specific location on the screen.
Recycle Bin : It keeps all
deleted files, to retrieve them later.
Release : A minor upgrade in
a software product. It is usually indicated by a change in number after the
decimal point such as 3.0, 3.1, 3.11, 3.2, etc.
Use of year : Occasionally
software developers prefer to add the year of release to a new version rather
than a numeral for their products. For example, Windows 95 (but not, Windows
4.0),
Windows 98, Windows 2000, etc.
Version : A major upgrade in
a software product. It is usually indicated by numbers such as 2.0, 3.0, etc.
Application program :
Program that has been developed to solve a particular problem, perform useful
work on general purpose tasks, or provide entertainment
Assembly language : It is a
low level programming language that allows a computer user to write a program
using abbreviations or more easily remembered words instead of numbers.
Compiler : A language
translator that converts the entire program of a high-level language into
machine language before the computer executes the program.
High level language : Also known as the procedural language
it resembles human languages such as English.
Interpreter : A language
translator that converts each procedural language statement into machine
language and executes it immediately.
Machine language : A binary
type low-level language consisting of 1s and 0s that the computer can run
directly.
System program : Program
that helps the computer to perform essential operating tasks and enables the
application program to run.
Attenuation : Loss of signal
power caused by the communication media.
Bipolar : Representation of
digital signals using voltages of different polarities.
Carrier : A high frequency
signal that carries information signals.
Coaxial cable : Pair of
conductors placed in the form of concentric cylinders along the same axis.
Communication media : Media
like copper and optical cables used in telecommunication.
Communication system : Any
telecommunication system like electrical or satellite communication system.
Decoding : Performing
mathematical operations on coded signals to detect and possibly
correct errors if any.
Demodulation : Extraction of
base signals from the high frequency carrier.
Demultiplexing : Extraction
of different information signals from a multiplexed stream of
Signals
Digital communication : A
form of communication in which information is represented and
transmitted by one's and zero's
Encoding (coding) :
Performing some defined mathematical operations on digital signals to
improve reliability and efficiency.
Energy form : Electrical,
optical or electromagnetic energy
Fourier analysis : Analysis
of complex waveform in terms of simple pure waves.
Frequency spectrum : Range
of frequencies in telecommunication systems.
Geostationary satellite : A
satellite whose instantaneous angular velocity and mean orbital period are the
same as that of earth.
Geosynchronous satellite : A
satellite whose mean orbital period is the same as the period of revolution of
earth, but its instantaneous angular velocity may differ slightly from that of
earth’s rotational speed.
Injection laser diode (ILD) : An optical source that produces sharp light beam when current is
applied to it.
Light emitting diode (LED) :
A low-cost optical source that produces light when electric current is applied
to it.
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