chapter 1 - Computer System

 Coversation between Toggle and Google

Google - My friend Jai says that some computers are so big that they occupy an entire room . is that true

Toggle - Yes Google computers come in different sizes and yes , some can be very large

Google - That sounds intresting . Why dont you tell me more about it

Toggle - Sure . Come along you see , Google ........

coversation ends

Computers are available in different sizes and types . in this chapter, we will discuss some   classification of computers on the basis of their size . we will also discuss some not so common input and output devices , such as bar code readers , magnetic ink ,charecter readers , and Braille printers

Classification on computers based on their size

on basis of size , we can classify computers in 5 catergories - mobile computers  , micro computers , minicomputers , mainframes , ad supercomputers