How does Computer Work?

In this post we shall see some basic computer terminology which helps computer to work.

Input : Data / Information entered into the computer using various input devices. 

• Input Devices :
• Keybord : To type the data
• Mouse : To point and click the objects
• Tracker Ball : Works similar to mouse, used by Graphic Designers
• Scanners : Converts the Hardcopy into Softcopy (Simply scans paper documents and stores them in system)
• Touchpad : The desktop which responds according to the Touch. 
• Light pens : Used to point the areas on the screen.
• Joy Sticks : Used for Playing Videogames. 

                               

Input Devices

• Output : Data / Information given by the computer. It displays on Monitor (Screen) / Prints via Printer / Generates sounds via Sound boxes and ofcourse stores the information in Disks.
• Output Devices : 
• VDU : Video Display Unit. Also known as Monitor. Which displays output
• Printers : There are many types of printers. These are used for converting the Soft-copy into Hard-copy (Printing the data  on Paper)
• Plotter : It is also similar to printer, but it can draw continuous point-to-point lines directly from vector graphics files or commands. So you can expect more clarity than printers.
• Speakers : Gives the output in the Sound Signal form

                                        OutPut Devices

• Processing : The Processor/Central Processing Unit/CPU performs the operations with the help of ALU (Arithmetic Logic Unit - which performs Mathematical and Logical Operations)

• Storage : The Random Access Memory (RAM) or Memory temporarily stores your date while you are working with that. 
• Storage Devices :
• Hard Disk : Internal Drive of High capacity which stores larger and important files including your Operating System.
• The speed of the Hard disk is measured in milliseconds, 
• The capacity of the Hard Disk is measured in Giga Bytes (GB). You can get harddisks of 40-80GB now a days. 
• A Giga Byte is equalent to 1024 Mega Bytes (MB)
• Floppy Disk : Its helps you to store smaller amount of data and take 
• It's speed is Very Very low.
• Capacity normally 1.44 Mega Bytes (hardly you can store 6 or 7 wallpapers :P)
• CD/CD ROM : 
• Slower than Hard Disks and Faster than Floppy Disks
• Capacity 650+MB
• DVD : 
• Slower than HardDisks but faster than CDs
• Capacity upto 17Giga Bytes

                                 

                                Various Storage Devices

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