sound format - Since there are many
ways to produce music, there are also
many methods to store music
Compressed audio format
Example: MP3 is a compressed file format. When an
original audio file is produced, the file size is very big
because it contains all the details of the music. By
setting the bit rate, the creator can specify how many
kilobits the music will be used to convert into mp3
Uncompressed audio format
Filming Industry
Technology
Chroma key(Greenscreen) - A special effect technique where 2
videos are superimposed on each other to produce special scenes
Avar - to control the part of an animated character
(e.g. control changes in a facial expression)
3D rendering - to produce more realism -
generating a 3D image from
a given 2D model by the use of software
Key frames - drawings that define the starting point and end
point for smooth transition in animation
generating intermediate frames between two
images to give the appearance of movement
ICT in Education
Computer Aided Learning(CAL)- Computer based
learning or computer aided learning refers to using
computer in delivering content or assessment
Advantages
Students can learn at
their own pace
Students can save
travelling time
Students can get instant
feedback on quiz
Disadvantages
Teachers cannot give
personal attention to
students
ICT in Daily life
Online
Banking
To withdraw or
check money e.g.
ATM machine
Online banking services
such as paying bills online
and money transfer
E-Commerce
Buying and selling something
online e.g. online payment
Data collected are : Humidity , Wind speed , rainfall , temperature
Super computer is used to perform calculation and generate
complex model for weather prediction
How is weather collected ? ; Weather data is collected from sensor at
weather station , weather balloons and satellite. The data is sent to centre
for analysis
How does the computer make weather prediction based on new weather
data? : When new weather data is received , the weather data is compared
with the existing known weather data. The computer makes the prediction
through calculation
How does the weather data is shown to user? : Weather image is
superimposed on map . The weather image can represent the cloud
movement , temperature , rainfall.
ADVANTAGE : Can see storm and hurricane movement , Can see
more complete picture of the weather
Computer-aided Design (CAD)
Widely used in building design, car design, interior
design because the drawing can be viewed in 3D and
able to link to CAM ( computer-aided manufacture)
HARDWARE: High resolution monitor to view the
design , Plotter to print a full-size drawings , Light pen
to draw on the screen
FEATURES IN CAD : Can view the drawing in 3D ,
Can enlarge or reduce the drawing easily , Can
add colour to the drawing , Can perform some
calculation on the drawing
Advantages : The drawing can be done in 3D
views , Users can modify the design easily ,
Users can enlarge and reduce the design
Disadvantages : Need a computer with
high processing power , Need a large and
high resolution monitor to view the design
ICT in Communication
Email - Electronic Mail
Allow user to send text and images
from one computer to another using
internet or computer network
Advantage:
Can attach files as attachment
The delivery of email is instant
Multiple copies of e-mail can be
sent to a group of people
Disadvantages
E-mail spamming and scam
is a problem
Users may not get immediate
response
Tele/ video conferencing
Tele confrencing: Allows people in different
locations to talk to each other as a group
Video conferencing: similar except they can
see each other
Both allows meeting with two or more
people using computer network to transmit
audio and video
Advantage
Save travelling time as users do not need
to travel
Save travelling cost
Company save office space for meeting
Disadvantages
A reliable and fast internet
connection is needed
Both parties must agree on common
time due to different timezones
Hardware needed: webcam,
microphone, speaker
Software needed: compression
and decompression software
Internet Technology
Advantages
Vast amount of information
available
Provides many ways to
communicate with each other
Technology that allows users to
connect to internet
Dial-up
Allows connection using phone line
Broadband
uses fibre or cable as
communication links
Advantages: -transfer rate is faster
-Always "on"
WiFi
A communication
technology that uses radio
waves
connects to the local are
network through the base
station
Advantages
No wire needed
Move around freely
within the range
DIsadvantages
Signals becomes
weak when there are
obstruction
VoIP: Voice Over
Internet Protocol
Technology that allows users to
make telephone calls over computer
network such as Internet Broadband
Example: Skype
Advantages
The cost is cheaper or free
Incoming call can be show
Possible for video to
transmit using digital phone
Disadvantages
The quality of the
voice may be
affected depends
on broadband
usage
Need to have
broadband
connection
IRC (instant Relay Chat)
IM (Instant Messaging)
Technology that allows real-time
messaging
Example: MSN
Advantages
Can send text, video and
files instanty
Can message two or more
people at the same time
ICT in Robotic / Game
ICT in game
virtual reality
A simulated 3D environment
requires data goggles,data gloves
Can be used in games,
viewing of houses, simulator
or medical treatment
Simulation
It resembles a real life system through the use of models
Mainly to predict a system's behavior under certain conditions
For example, BOTs in game, OPEN source physics and ASCEND
ICT in robotic
Domestic use
The microwave scans the
barcode of the food
After scanning, the microwave will set the right
timing and temperature to cook it
However, it is not able to detect if the food is cooked perfectly
CCTV
Detects intruders by comparing
image of surrounding with one
stored in the system
If there is movement, the image
will be different and there will
be alarm
Industrial robot
A robot is a device that has a control
system performs certain task based
on feedback given
Advantage
It can work 24/7 and all year round
It can work in a dangerous environment
It produces less error
Disadvantages
If the robot malfunctions,
the whole system is down