Keyboard

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Keyboard

(http://www.orpheuscomputing.com/images5/black-Dell-keyboard.jpg)

Function: to enter the keys or letters according to the key pressed

Benefits:
-A keyboard has all the keys available and a number pad on the side for it and is very small to use
-they are very cheap and versatile

Disadvantages:
-they can break very easily if spilled or thrown and are very cheap.

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Mouse

Image result for mouse

Function: mimic the movement of the mouse into the computer as a Curser

Advantages:
-very cheap and small
-can handle small detailed movements

Disadvantages
-Can break very easily
-sensors might not be accurate enough

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OMR (optical mark reader )

Image result for omr

Function
can read marks off of papers example exam papers

Advantages
can continuously mark exam papers
are small

Disadvantages
can be very expensive
can Break

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Graphic tablet

Image result for graphic tablet

Function:mimic pens drawing into a photo editing program

Advantages
-very easy to use
-better precision the mouse
Disadvantages
-sometimes expensive

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Sensor

(http://img.directindustry.com/images_di/photo-g/through-beam-sensor-photoelectric-sensor-cylindrical-17825-2692103.jpg)

Function: to detect stimuli in the environment such as light sensor, humidity sensor temperature sensors pressure sensors and barcode readers

Advantages
-can we use for many purposes such as washing machines and automated ovens

Disadvantages
-Can cost a lot
-need training to use properly

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Joystick

(http://ecx.images-amazon.com/images/I/414X2Z0A7TL.%3Cem%3ESY355%3C/em%3E.jpg)

Function: to mimic movement of the joystick in the computer

Advantages
-more precise movement in a mouse or tablets
-are used for many games
Disadvantages
-can be expensive
-are not made anymore

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Remote control

Image result for remote control

Function: send signals to computer to do specific tasks such as controlling a TV

Advantages
-are used widely in almost every TV
-very cheap to get a replacement

Disadvantages
-they are very small so can get lost very easily
-they are fragile

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Trackpad

Image result for trackpad

Function:to mimic the movement of your fingers as the cursor in the computer

advantages:
small and versitile
easy to use

disadvantages
is expensive 
it can be broken easelly

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scanner

Image result for scanner

Funtion: To scan pictures or dcuments and send a digital copy to the computer

Advantages
can easly send or edit documents
allways have a digital copy to save in case of lose of phisical copy

Disadvanteges
Is expensive 
a scanner can break very easly

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Chip and Pin reader

Image result for chip and pin reader

Function: to acces bank card information using the chip in tthe bank card and a pin provided by the card holder

Advanteges:
Simple to use
Is widely used

Disadvanteges
If you forget our pin you cannot access your bank card
if someone else knows your pin they can use your credit card

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MICR

Image result for MICR

Function: a magnetic ink charector reader which reads the text or numbers on the magnetic ink in newer bank cards.

Advantages
-Safe method of payment for credit cards
-Are widely used nowadays

Disadvantes
-Expensive 

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Chip and Pin reader

Image result for chip and pin reader

Function: to acces bank card information using the chip in tthe bank card and a pin provided by the card holder

Advanteges:
Simple to use
Is widely used

Disadvanteges
If you forget our pin you cannot access your bank card
if someone else knows your pin they can use your credit card

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Bar code Reader

Image result for barcode reader *images

Function:to identify the product code in the barcode and input it into the computer

Advantage:
Simple and versatile to use
relitivly cheap

Disadvantage
cannot read any barcode which is a little distorted
need software to work properlly

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Web Camera

Image result for web camera

Function: to input images seen in the camera into computer

Advantages:
many laptops now have inbuilt web camaras 
relitivly cheap and small

Disadvantages
the cheaper ones have less realution with blurry images
the higher quailty ones are more expensive and fragile

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Microphone

(http://www.ictlounge.com/Images/input_devices_microphone.gif)

Function: to input heard sound into the computer

Advantage
-very cheap to buy
-can speak instead of typing

Disadvantages
-can take alot of computer storage spave
-background noise can interfere

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