Peripherals of Computer

            Peripherals for Your Computer 

Introduction:

• Peripherals are the external devices that extends the functionality of a computer.
• Below mentioned devices are some of the add-ons and let us see how they work and for what.
• Peripherals are categorized into Input, Output and Storage and other devices.

I.Input Devices:

Mouse and Keyboard

• Primary input devices for computer.
• Mouse is used for cursor movement.
• Keyboard is used for data input.

Scanners

• Used to scan documents and photographs into computer.
• Scan documents can be editable through a software called Optical Charecter Recognition(OCR).

                                           

Cameras

• Through cameras we can input Images, Videos and Movies.

• Data transferred can be saved,edited,printed and can email for others.

Webcam

• Mostly used to male video calls using broadband connection.

• Can see the other person talking to using webcam.

                                          

II.Output Devices:

Printers

• External hardware output device.
• Converts electronic data stored in a computer into hard copy.
• Most commonly used external device to print text and images.
• Printers are categorized as Impact and Non-impact printers.

                    Printers are Categorized as Impact and Non-Impact printers.

Properties	Impact Printers	Non-Impact Printers
Meaning	Produces text and images by striking ink ribbon on to the paper.	Produces text and graphics on paper without striking the paper.
Tools To print	Uses ink ribbon.	User ink spray,toner powder.
Quality	Less	High.
Consumption today	Less	Mostly used
Speed	Slow	Fast
Durability	Riliable	Durable
Sound Effect	Noicy	Quiter
Image Quality	Poor	Rich
Color Quality	Limited	Strong clear color
Examples	Daisy Wheel DotMatrix	Inkjet Laser

 

Speakers

• Audio output .

• Used for listening music, watching movies and so on.

                               

Projector

• Display the image from computer onto screen.

• Mostly used in conference halls.

III.Storage Devices:

Flash Drive

• Small drives capable of holding much information (4 GB - 16 GB) and even more.

• Easier to save and retrieve.

• Can be saved and erased many times.

                           

External Hard Drive

• External Storage device capable of holding large amount of data(200+ GB).

• Data can be easily transferred between computers.

• Re writable and is like a hard drive in CPU.

                             

IV.Other Devices:

Wireless Internet Devices

• Used to connect to internet.

• Extrenal USB wireless device or Wifi-Router are the examples.

         

CD/DVD Media

• Used for back data and for making  audio,video CD's.

• Comes in either Write once(CDR) and re-writable (CD-RW) format.

Cell Phone Data Cable

• Used to connect mobile phones to your computer.

• Used to transfer pictures, movies, videos and other data from computer to mobile phone and vice-versa.

                                      

Surge Protector/UPS

• Used for battery backup when power goes out.

• Protects your computer from abnormal shut-down which leads to files corrupt.

USB Hub

• Used to connect between computers via USB port for data sharing.
• Extends the amount of USB ports of the system.