Revision on work covered in Grade 12, Computer Applications Technology. Topics covered include Systems Technologies, Internet and Network Technologies, Social Implications and Integrated Scenario.
De-limited : used for splitting up data, such as fields in records
OMR : procedure for recording human-made marks
Utilities : applications made to carry out regular tasks
Virtual Reality : where you are immersed in a completely different universe created by the
computer
Shaped internet : a reasonable method of using your ADSL line to send data to your
computer. Priorities are assigned to certain items over others.
Defragmentation : identifies files and accelerates disc access
Adware: software that creates internet adverts automatically in user interface
Database : a systematic gathering of structured data
BOTNET : a collection of hijacked computers that are managed remotely to carry out tasks
Biometric Input : input that requires a person's unique physical traits.
FTP : File Transfer Protocol. Network protocol for computer-to-computer file transmission
Service pack : a number of upgrades for software
System Technologies
What is the size of a monitor measured in?
★ Inches (“)
What is used to measure computer processing speed?
★ Ghz
*Short term memory critical for system performance is RAM
, What is a contrast ratio?
★ The numerical representation of the contrast between light and dark on a screen
What piece of hardware is a requirement for gaming computers?
★ Graphics card
What is Convergence?
★ Describes the practice of combining various technologies and tasks that, in the past,
needed distinct devices into a single device that can do all or some of the duties.
What is a QR Code?
★ Used for information scanning and URL storage.
Give troubleshooting tips for a non-responding mouse.
★ Restart the computer.
★ If your mouse is connected, unplug and reattach it. Try a different port if it still doesn't
work.
★ If the mouse is wireless, the dongle needs to be taken out and put in a new port, or
the batteries need to be changed.
How do you get high quality in an inkjet printer?
Change the paper's quality
Web-based and Installed Applications
WEB-BASED INSTALLED
★ Applications that are available online ★ Applications that you must download
and install on your device in order to
use them
Why is a desktop better to have, opposed to a laptop?
★ They provide additional computing power.
★ Power users should use desktop computers.
★ Simpler to maintain, customise, and upgrade
What to consider when buying a computer
★ Memory
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