computer

1. COMPUTER
NETWORKS
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2. TRUE or FALSE: Write True if the statement is correct otherwise write False if
incorrect.
1.USB Stands for University Serial Bus
2.Computers are able to communicate with one another over networks.
3.Bluetooth is a type of connection which is often limited to an individual
person and his or her personal devices. Normally, these devices must be
within the range of 10 meters with each other.
4. Wi-Fi uses radio waves to transmit information across a network. Wi-Fi's
signals are transmitted in frequencies of between 2.5 and 5 gigahertz
5. HDMI High-definition Multimedia Interface (HDMI) is cable that
transmits signals between a computer and network devices such as a
router, switch, or other computers.
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3. How Computers Connect
to Other Computers
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Computer peripherals using
wired or wireless
connections. In the same
manner, a computer connect
to another computer - with
or without wires

4. A computer network is an interconnection of
two or more computers. This interconnection
gives these computers the capability to share
information and resources. PAN LAN WAN
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Computer Network Systems

5. Personal Area Network (PAN) A type of
connection which is often limited to an
individual person and his or her personal
devices. Normally, these devices must be
within the range of 10 meters with each other.
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Computer Network Systems

6. Local Area Network (LAN) A connection in
which group of computers and other devices,
such as network printers, share a common
communications line within a certain area
such as a building or a small campus.
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Computer Network Systems

7. Wide area network (WAN) is a computer
network that extends over a large
geographical area, although it might be
confined within the bounds of a state or
country.
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Computer Network Systems

8. Methods of Communication:
Wired
USB Universal Serial Bus (USB) is a
connection or interface that allows the
computer to communicate with system
peripherals such as keyboard, mouse,
printers, etc., as well as other devices like
digital cameras and portable fans.

9. Methods of Communication:
Wired
Ethernet Cable An ethernet cable transmits
signals between a computer and network
devices such as a router, switch, or other
computers.

10. Methods of Communication:
Wired
HDMIHigh-definition Multimedia
Interface (HDMI) is a connector for
transmitting audio/video data which are
compatible to computers, projectors, and
digital televisions.

11. Methods of Communication:
Wired
Audio Jacks The audio jacks are the 3.5 mm jacks
used for microphones (as input), and speakers (as
output). It uses color codes as well to indicate the
type of input and/or output line. Pink: Mic in |
Blue: Line in | Green: Front speakers out Black:
Surround left and right speakers out | Orange:
Center/subwoofer out | Grey: Middle speakers out

12. Methods of Communication:
Wired
Wi-Fi uses radio waves to transmit information
across a network. Wi-Fi's signals are transmitted in
frequencies of between 2.5 and 5 gigahertz.

13. Methods of Communication:
Wired
Bluetooth Bluetooth uses radio waves to connect
to other devices. The connection via Bluetooth is
called pairing. Once paired, devices are able to
send and receive information provided they are
within a given range which is typically 10 meters.

14. ICT SYSTEMS AND IT
Information and Communication Technologies (ICT) refers to
technologies that capture, transmit and display data and
information electronically and includes all devices,
applications and networking elements that allow people to
connect in a digital world.
An ICT system refers to the overall set-up, consisting of
hardware, software, data and its users. ICT systems as a
whole include:

15. ICT SYSTEMS AND IT
People – to supply the data and to make
decisions from the output supplied from the
system information, which is based on the results
from processing data and the output from an ICT
system.

16. ICT SYSTEMS AND IT
Hardware e.g. input devices, storage, processor,
output devices and communication devices.

17. ICT SYSTEMS AND IT
Procedures – to determine what needs to be
done and when. This causes the passing of data
or information between people.

18. ICT SYSTEMS AND IT
Software – the computer programs which provide the
step-by-step instructions to complete the task.

19. ICT SYSTEMS AND IT
Data – raw material that is processed by the system to
provide the information for the output provided by the
system. Data can come in different formats, such as
sounds, images, and videos, etc.

20. Thank You
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