Computers, part of
your life – Grade 11
It's all about ICT
Module 1.1
Contents
• The role and value of ICT in the
workplace
• CAT – a most valuable subject!
• The computer
• Protecting your information
• Test and improve
3
The role and value of ICT
in the workplace
4
How ICT influence one’s life and
5
life styles
• Jobs we do
• Way we store and watch photographs
• Way we entertain ourselves
• Way we shop and do banking
• Way we communicate
• Way we interact with friends
• Way we obtain and use information
QUICK REVISION
How ICT influence one’s
life and life styles
6
‘Over-availability’
Social networking sites
Instant messaging
‘Blog’ and e-mails
Always available – never switched off!
QUICK REVISION
How ICT influence one’s
life and life styles
TV/
Radio
Cellphone
calls
QUICK REVISION
Information
•Find quickly
•Determine if
source
reliable
•Analyse and
summarise
SMS
/MMS
7
E-mail
WWW
How ICT influence one’s
life and life styles
8
•
Movies, music and printed media available via Internet
•
Video on Demand –from online storage
•
Internet TV not using radio signals
•
Online travel bookings
•
Online computer games
•
Fitness programs in front of TV with gaming console
QUICK REVISION
So what role does ICT play
in the workplace?
9
• Work wherever we have access to computer (and internet).
• Communicate more effectively.
• Store and process vast quantities of data to make more
informed decisions.
• Identify and adapt to changing trends (e.g. sales).
• Perform tasks that are difficult or dangerous for humans to
do.
So what role does ICT play in
10
the workplace?
• Perform repetitive mechanical actions with consistent
quality.
• Empower individuals (smaller companies that make
effective use of ICT can compete globally).
ICT allows us to do all these things more quickly and with
less manpower.
So what role does ICT play in
11
the workplace?
Also a negative role…
• Requires constant upgrading of skills, hardware and
software.
• Smaller pools of highly-skilled ICT workers replacing large
numbers of staff.
• ICT employees working longer hours to meet the
expectations of customers.
CAT – the most valuable
subject!
12
CAT – the most valuable subject!
Use
computers
to solve
problems
Use
computers
to study
and/or do
research
CAT
teaches
you to:
Easily learn
to use new
software
13
CAT – the most valuable subject!
Fashion,
game or web
page
designers
Doctors,
paramedics
and nurses
Accountants
Careers
Photographers
and moviemakers
DJs and
musicians
Social media
to advertise
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 ICT is important in virtually
any job you can think of.
 You need to be able to source
and process data and present
information as quickly and as
accurately as possible.
 You need to be able to
choose and use the right ICT
tools for the job at hand.
Taking CAT was the best
decision you could have
made!
15
The computer
16
The computer
Take
input
Process
it
Store input and output
17
Produce
output
What is a computer?
• Laptops
• Smartphones
• Tablets
QUICK REVISION
• Desktop
computer
 Multi-purpose
 Electronic devices
 Portable/mobile (left)
18
Types of computers
19
Servers
Laptops
Notebooks
Tablets
Smartphones
Portable
Processing power
Physical size
Desktops
Types of computers: Portable
20
Computers and ICT devices used for work and for
• Entertainment
• Surfing the web
• Communication
• Social networking
Portability:
work anywhere, at any time
Types of computers: Portable
21
Laptops/notebooks
Portable computers which use miniaturised parts that
have a low power consumption, so as to allow for portable
computing on battery power.
Cases with hinged screens, keyboard and suitable pointing
device (touchpad)
Types of computers: Portable
Laptops/notebooks: Power settings
• Specifying that
the computer
should conserve
power by starting
to ‘sleep’ or
hibernate when
it has not been
used for a period
of time
22
Types of computers: Portable
Laptops/notebooks: Power settings
• Setting the
brightness of the
screen
• Choosing a
balance between
power
consumption and
performance
23
Types of computers: Portable
Tablets
• Portable computer with a touch or
pen-sensitive screen
• Ideal for quick, small scale
computing
• Special operating systems
designed for mobile devices
• Long battery life
• Wireless (WiFi) and cellular data
connectivity (e.g. 3G and
4G/LTE).
24
Types of computers: Portable
25
Hybrid laptops /tablets
• Trend to include touch screens in laptops/notebooks
• Combine the touch screen with a hinge (to swivel the
screen 360 degrees) – or to remove the screen
completely
• So allowing the device to be used
as a tablet
Types of computers: Portable
26
Smartphones
• Perfect example of digital convergence – combines the
features and technologies of many separate devices.
All smartphones have the following:
 An operating system (Google Android iOS)
 ‘Large’ colour screens
 Built-in data modem (3G, HSDPA or 4G/LTE)
 GPS for navigation
 One or two cameras (front facing and back facing)
 WiFi to connect to wireless networks
 Speakers and a microphone
Types of computers: Servers
and clients
27
Servers are computers that provide services or resources to
other computers (clients) that are linked in the network.
These services could be providing internet access or storing
all the users’ files.
28
Dedicated devices, such as Automatic Teller
Machines (ATMs), GPS (Global Positioning System)
devices and household appliances like microwave
ovens and washing machines, are designed to
perform just one specific task. These devices are
not computers.
Protecting your
information
29
The theft of hardware is not just about
the cost of replacing the hardware
• Data stored on the computer or device may not be
backed up.
• Information might be private or sensitive.
• Information increasingly stored on portable devices.
30
Hardware theft and protection
• Record the serial numbers of your hardware.
• Cable locks to chain equipment to a solid object.
• Lockable cabinets (with ventilation) for system units
(‘boxes’).
• Motion sensors with an alarm which detect when a
computer is moved.
31
Uninterruptible Power Supply
32
• Protects computer against power surges
• Provides power to the computer(s) connected to it as
soon as the power goes out
Test and improve
33
Written module activity
34