input, output, process, accessibility

1. THE JOYSTICK
By Carla Engerer

2. ITS USES
 A joystick is an input device
 It is mainly used for games, and one could attack it
either to the television, games or to the computer
 It consists of a stick that pivots on a base and
reports its angle or direction to the device it is
controlling.
 It is also known as a control column.
 It often has supplementary switches to control
various aspects of the aircraft's flight.

3. TYPICAL JOYSTICK

4. Sometimes they
are referred to as
game controllers
which would be
connected to the
television and you
could control the
game.

5. Input Devices
The Mouse
Jessica Bonnici 4.4

6. The Mouse and its Uses
• Pointing device
• Enables well-coordinated actions
between movement of cursor and
selection of objects
• Used when using an operating
system to:
 select drop down menus
 point and click on items
 select items
 drag and drop items from
one place to another

7. Types of Mice
• Mechanical mouse – hard rubber ball that rolls
as the mouse is moved. Sensors inside the mouse
detect the movement and translates it into
information that the computer interprets.
• Mice with a small wheel - when combined with
correct software allows additional functions and
fine control over applications
• Trackball mouse – rather than moving the
mouse around, use your thumb to roll a ball on
top of the mouse

8. Types of Mice
Stylus Mouse
Trackball Mouse Mechanical Mouse
Small wheel
Infrared / Radio Frequency Cordless Mouse
(relays a signal to a base station wired to the computer’s
mouse port)

9. Input devices
Webcam
Lara Agius

10. What is a webcam ?
 A webcam is a hardware camera connected
to a computer that allows anyone
connected to the Internet to view either still
pictures or motion video of a user or other
object.

11. What Are the Functions of a
Webcam ?
 A webcam is a small camera attached to a
computer. They serve a variety of purposes,
from taking still images to sending a live
video over conference calls. Many laptops
have a webcam built in to the computer
screen, but external webcams are also sold.
If you purchase an external webcam for
use, you may also need to get a
microphone if you plan on using the camera
for either captured or live video.

12. Chantal Chetcuti

13. • A hard disk drive is a magnetic data storage
device which is very cheap.
• It was Introduced by IBM in 1956, HDDs have been
the most important secondary storage device in
general purpose computers since the early 1960s.
• They have maintained this position against
competing products, including
today's solid-state drives, including USB’s.
• A hard drive is the central storage device for
data on your computer. The documents you
create,
Chantal Chetcuti

14. • The hard drive is sometimes referred to as
the "C drive"
• External hard drives come in desktop
form and they are used for expanded
storage capacity. These are Portable
Chantal Chetcuti

16.  A process is an instance of a program
running in a computer. It is close in meaning
to task , a term used in some operating
systems. In UNIX and some other operating
systems, a process is started when a
program is initiated. Like a task, a process is
a running program with which a particular
set of data is associated so that the process
can be kept track of. An application that is
being shared by multiple users will generally
have one process at some stage of
execution for each user

17. Central Processing Unit
Petra Magro 4.4

18. for ?
stand
CPU
does
What
 CPU to edit for Central styles
Click stands Master text Processing Unit.
Second level
Third level
 The CPU
Fourth levelmakes part of processing in the
computer.
Fifth level
 The CPU is the brains of the computer where
most calculations take place.

19.  Click to edit Master  Click to edit Master
text styles text styles
Second level Second level
Third level Third level
Fourth level Fourth level
Fifth level Fifth level
 The CPU is the hardware within a
computer system which carries out the
instructions given by the computer
program by helping in the input and
output operations of the computer.

22. A printer is a peripheral device that
produces a physical output of documents
from the computer.

23. Ann-Marie Buckle
4.4

27. Emma Magrin

28. CRT PROJECTORS
They are using
cathode ray tube
technology for
creating brighter
images.

29. LCD PROJECTORS
Another popular video projector type is the LCD
projector. LCD (liquid crystal display) projectors
create close to natural colours and spectrum.
Also they create well brightness even in a small
light. An advantage is that they are being sold in
a moderate in price.

30. DLP PROJECTORS
DLP (digital light
processing),projectors can
be classified as one-chip or
three-chip. DLP’s main
advantages are a sharper
image and a wider colour
range. But their lumen life
is shorter than LCD and
CRT.

31. COMPUTER ACCESSIBILITY

32. WHAT IS COMPUTER ACCESSIBILITY?
Computer Accessibility is the interaction, between a computer system and
others in which these communicate and interact. It is largely a software
concern; when software, hardware, or a combination of hardware and
software, is used to enable use of a computer by a person with a disability
or impairment, this is known as Assistive Technology.
Andrea Borg Brincat

33. SOME EXAMPLES OF COMPUTER ACCESSIBILITY:
Cognitive impairments and learning disabilities, such as dyslexia,
ADHD or autism.
Visual impairment such as low-vision, complete or partial blindness,
and colour blindness.
Hearing impairment including deafness or hard of hearing.
Motor or dexterity impairment such as paralysis, cerebral palsy, or
carpal tunnel syndrome and repetitive strain injury.
Andrea Borg Brincat

34. Accessibility
For
DEAF
People

35. What problems could there be?
• Imagine trying to go on Youtube find to a song
but can’t here any sound
• Online lecture or educational video
• Sometimes a computer makes an annoying
sound when something is wrong
• Audio presentations

36. Solutions
• Subtitles
• A window may pop up indicating an update, e-
mail, etc...

37. Maria Cassar 4.4

38.  Avery significant challenge in computer
accessibility is to make software usable by
people with visual impairment, since
computer interfaces often solicit input
visually and provide visual feedback in
response. For individuals with mild to
medium vision impairment, it is helpful to
use large fonts, high DPI displays, high-
contrast themes and iconssupplemented
with auditory feedback and screen
magnifying software.
Maria Cassar 4.4

39.  In the case of severe vision impairment
such as blindness, screen reader
software that provides feedback via text
to speech or a refreshable braille display
is a necessary accommodation for
interaction with a computer.
Maria Cassar 4.4

41. How do deaf people use the PC?
 Captioning was developed, which does not only provide a textual equivalent of
the spoken text, but also informs the reader of any other sounds, the speaker, or
the intonation of the speech as necessary.
 Unfortunately captioning is a very time consuming and costly procedure. In
today's world, when it is very easy to create videos and upload them on the
internet, it is hard to keep track of all information and to provide an equivalent
caption. This is definitely a major inaccessibility problem which is hard to
overcome. In most cases, official notices, and audible information provided by
public agencies have captioning associated to them. In many countries, it is
actually a legal requirement.