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Devices

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Devices

4. Click for:
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5. Advantages Disadvantages
They allow us to enter in correct The Qwerty and Dvorak
data, checking the monitor as we keyboards ease depends on the
go along user.
Data can be entered quickly It isn’t as quick as using a MICR or
OMR.
It is a strong device (Robust) Takes up space.
The concept keyboard can be of
particular use to people with
disabilities
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Devices

6. Advantages Disadvantages
They take up less space and Due to their small size,
are easy to carry around. entering the numbers may be
difficult.
Easier to hide them in case of
entering a PIN
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Devices

7. Advantages Disadvantages
It is faster to select an option using It is easy to damage them.
a mouse as opposed to a keyboard.
They increase the speed of It may be difficult for a person with
navigation disabilities.
They take up less space compared They take up more time if you were
to keyboards. to enter long passages of data.
Their purpose is to make choices
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from a menu; clicking.
Devices

8. Advantages Disadvantages
Like a mouse, it allows you May be found difficult for
to quickly chose an option. people to use.
Again like a mouse, it Difficult to control as they
allows quick navigation. are sensitive.
Hand no wire to them, built Again like a mouse,
into laptops. entering data with a lot of
words can be difficult and
time consuming. Back to Input
Devices

9. Advantages Disadvantages
Don’t require the same When a button is not present
amount of control as a mouse. to do a specific action is not
present, a problem arises.
Easier for people with Slower when selecting
disabilities options.
Accuracy of where the pointer
is on the screen can be
increased.
Fixed into position Back to Input
Devices

10. Advantages Disadvantages
Video date can easily be The video files occupy a
edited. lot of space.
The output can be A powerful computer
customized as to what and graphics card is
format you want it. necessary in order to
edit video files.
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Devices

11. Advantages Disadvantages
Can be various distances from the People suffering from RSI will not
device while still being able to find it easy to use.
operate it.
Beneficial to people who are unable Any obstruction in the pathway of
to walk with ease. the infrared signal from the remote
to the receiver could result in no
response from the device.
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Devices

12. Advantages Disadvantages
It is faster to choose an Like a mouse and tracker
option using a joy stick. ball, it is difficult to use
when it comes to typing
long passages.
Are able to control objects Difficulty may arise when
in 3D. trying to control the
pointer.
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Devices

13. Advantages Disadvantages
Faster entry of option Screen is flat so continual
use may result in RSI.
Much more easier to select
your option
Much user friendly for
people with disabilities
Less likely to select an
incorrect option. Back to Input
Devices

14. Advantages Disadvantages
Faster entry of data Damaged strip means that data entry
needs to be done manually, reducing
speed.
Data entry is accurate Loss of card could cause problems
such as no entry to restricted areas.
It is more secure
Can be used in security Back to Input
systems Devices

15. Advantages Disadvantages
Can be immediately updated If the card falls in the hands of a hacker,
they can access all your details and can
use it for identity theft.
Are less damaged than magnetic strip
readers due to regular use.
The data that is entered is more secure
than a magnetic strip
Security reasons: no entry without card. Back to Input
Devices

16. Advantages Disadvantages
It is very secure because it will If PIN is forgotten the card is
not work without the PIN almost useless; the transaction
gets cancelled.
Time effective : using cash or Great care must b taken when
cheques would require a longer entering the PIN.
time.
Chips are more indestructible
than magnetic strips.
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Devices

17. Click for:
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18. Advantages Disadvantages
Images can be stored and Limited Accuracy
then later be edited.
Using OCR saves time rather
than typing up the whole
document again
Easier to scan a bar code
rather than type it up.
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19. Advantages Disadvantages
Take a better quality picture Much more costly then traditional
cameras
Easier and quicker to get them onto Need to change the batteries more
the computer. often.
Quicker than having the film developed
And the amount of photo storage is
much greater Back to Input
Devices

20. Advantages Disadvantages
Sound can be altered whilst Voice recognition is not as
recording it. reliable as inputting text via a
keyboard.
It is much easier and much
faster to input text as speech.
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21. Click for:
Types of Sensors
How does a Sensor Work?
Advantages and Disadvantages
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22. • Used in automatic washing machines, automatic cookers,
Temperatu central heating and greenhouses.
re sensors
• Used in burglar alarms, automatic washing machines, and can
Pressure be used as a part of a robotic arm.
sensors
• Used in computer-controlled greenhouses, burglar alarm
Light systems, automatic washing machines and street lights.
sensors
Sound • Used in microphones and burglar alarm systems.
Sensors
Humidity • Used in computer-controlled greenhouses
Sensors
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24. Advantages Disadvantages
Readings that are taken by sensors are If there is a power failure, the sensor
much more accurate than human cannot work; therefore it is unable to take
readings. any readings.
The readings are taken at constant
intervals, allowing the microprocessor to
take immediate action.
Sensors are able to do all the calculations
or automatic processes while humans
perform other tasks.
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Devices

25. Advantages Disadvantages
Files that are produced can be It will not have the original touch
manipulated. of the music being played live.
“The music produced can sound
manufactured rather than
spontaneous.
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Errors can be omitted
Devices

26. Advantages Disadvantages
You can alter the drawing When choosing from a
whilst making it. menu, it could be difficult.
More accurate than using a More expensive than a
mouse mouse
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Devices

27. Advantages Disadvantages
Security is better than that of The amount of characters that
OCR’s can be used is limited.
Accuracy is better than that of Expensive
OCR.
Cheques can be read even
someone has written over
them.
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28. Advantages Disadvantages
Quick way of entering data Manual methods of marking
are more accurate.
More accurate than OCR’s Forms which can be
processed by OMR’s need to
planned with precision.
The user can easily fill in the
form that will be read by the
computer. Back to Input
Devices

29. Advantages Disadvantages
It is easier and faster to Errors are common.
enter data this way rather
than typing up the whole
thing.
Handwriting may not
always be recognised.
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Devices

30. Advantages Disadvantages
It increases the speed. You Expensive.
can scan the numbers on
the barcode rather than
typing them up.
It is also more accurate
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31. Back to Input
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32. Advantages Disadvantages
Better than barcode readers as More expensive compared to
they still work when they are other methods.
intercepted.
Can be read from and also be There is a lack of privacy as it
written to. can be used to detect the
movement of people.
More difficult to copy as
opposed to a barcode.
Robust
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Devices

33. Can then be
Take moving Input to a Files are incorporated
pictures computer then stored into slideshows
or web pages.
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34. Advantages Disadvantages
Can quickly be turned on Limited facilities
Provide elders the opportunity to Not portable
stay in contact with their friends
and family.
Software is also limited.
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Devices