This document summarizes key aspects of communication technology. It begins by noting how communication has changed through new technologies. It then outlines the main topics covered: data, information, multimedia, and networking. For each topic, it provides definitions and examples. Data is defined as measurements represented by symbols. Information is processed data that helps with decision making. Multimedia integrates different media types and has various uses and requirements. Networking connects computers to share resources, requiring hardware like network cards, hubs, and switches. The document aims to explain essential concepts in communication technology.

1. Communication Technology
Done by:
M.GAGAN SRI SAI
CLASS – 9
SECTION – A/1
ROLL NO.2

2. Introduction
Communication is the essence of human
civilization.
The development of communication
technology has changed the means and modes
of communication.
Now people communicate through e-mails,
mobiles, video calls, etc.
The main ides is to transfer the data or
information at high speed.

3. Contents
Data
Information
Multimedia
Networking

5. DATA
The word data is the plural of datum, though
data is commonly used to represent both
singular and plural forms.
Data is the measurement of the attributes or
characteristics of entities like people, places,
things, and events.
The measurements are usually represented by
symbols like numbers, alphabetical, and other
characters.
Data can be numeric, text, image or voice.

7. INFORMATION
Information refers to processed data. It is
meaningful and helps in making decisions.
A company launches a new product, say, a face
wash and gives a pound of 5ml free of cost to
100 families. After a week, a survey result
decides how to proceed with the marketing
campaign.
The meterological department collects the
weather measurements data, which is then
processed into a chart for making a weather
forecast.

9. MULTIMEDIA
Multimedia can be defined as an
integration of sound, animation, still
images, and video along with computing
technology.
 Multimedia files occupy more space
due to the sound and picture files.
Multimedia Software is available on CD-
ROMs.

10. MULTIMEDIA
Uses of Multimedia:
1) Adding Sound Files
2) Creating 3-D effects in different ways
3) Learning a new language by interacting using
the written and spoken words
4) Creating animated birthday cards

11. MULTIMEDIA
Different Categories
of Multimedia:
1) Interactive
2) Entertainment
3) Information System
Multimedia
Requirements :
1) CPU
2) RAM
3) Audio
4) Video
5) Hard Disk.

13. NETWORKING
A computer network is a set of computers connected
together for the purpose of sharing resources.
There are two terms that are commonly associated
with networking – servers and workstations.
Servers - A server is a computer program or a
machine that waits for requests from other machines
or software (clients) and responds to them.
Workstation – It is the computer that is directly used by
some one to do work. A workstation can also act as a
server when file or printer sharing is enabled.

14. NETWORKING
Hardware Requirements for
Networking :
1) Network Interface Card (NIC)
2) Registered Jack-45 (RJ-45)
3) Hub
4) Switch
5) Modem ( Modulator-Demodulator)
6)Router

15. NETWORKING
The Advantages of
Networking are :
1) Resource Sharing
2) Reliability
3) Financial benefits
4) Better
Communication
5) Access to a remote
database
Types of Networks:
1) Personal Area
Network (PAN)
2) Local Area
Network (LAN)
3) Metropolitan Area
Network (MAN)
4) Wide Area Network
(WAN)

16. THANK YOU