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