Keyboard

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.

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

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

Function:mimic pens drawing into a photo editing program

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

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

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

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

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

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

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

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 

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

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

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

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