General information about the computer and how it has been changing during the years. Computers impact life in every sense; since daily life until bussiness, education, countries, etc.

2. It is an electronic device for
storing and processing data,
typically in binary form,
according to instructions given to
it in a variable
program.

4.  External
devices are connected to a computer
using cables and ports.
 Ports are slots on the motherboard into which a
cable of external device is plugged in.
Examples of external
devices attached via ports
are mouse, keyboard,
monitor, microphone ,
speakers, etc.

5.  An
operating system (OS) is a collection of
software that manages computer hardware
resources and provides common services for
computer programs. T
 he operating system is an essential
component of the system software in a
computer system. Application programs
usually require an operating system to
function.

8. A
computer network or data network is a
telecommunications network that allows
computers to exchange data. In computer
networks, networked computing devices pass
data to each other along data connections.
The connections (network links) between
nodes are established using either cable
media or wireless media. The best-known
computer network
is the Internet.

9.  Set
of rules or language use by computer and
networking devices to communicate with one
another.
 For example:
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TCP/IP
UDP
IPX/SPX
NetBEUI
Apple Talk
DLC
NWLINK