文档介绍：I N T R O D U C T I O N T O C O M P U T E R S

Objectives
Define the puter and discuss the four puter operations: input,
processing, output, and storage
Define data and information
Explain the ponents of puter and their use
Describe the use and handling of floppy disks and hard disks
puter software and explain the difference between system software and
application software
Identify several types of puter application software
munications channels and equipment and the and
World Wide Web
Explain how to purchase, install, and maintain a puter, a notebook
computer, and a puter
Define merce

C o m p u t e r : I n p u t , P ro c e s s i n g , O u t p u t , a n d S t o r a g e
In today’s world, computers are used for almost every task imaginable. Routine activities
such as paying bills, buying groceries, municating with a friend can be done with a
computer. That is why it is important not only to know how to use puter, but also to
understand ponents of puter and what they do.

Recent studies report that almost 40% of homes surveyed have puters, and
this number is growing. Given the widespread use puters, computer literacy - a
knowledge and understanding puters puter uses - has e an essential
ingredient in the recipe for ess in today’s world. Florida was the first state to demand
computer literacy of all students by grade 12.
Collectively, the electric, electronic, and mechanical equipment that makes up a personal
computer is called hardware. Devices that surround the system unit (., the keyboard,
mouse, speakers, monitor, and so on) sometimes are known as peripheral devices.

Computers manipulate (process) data (input) to produce information (output) and hold
(store) that information for future use. These operations pleted incredibly quickly.
Today’s puter can perform 72 trillion operations per second. If a person did one
arithmetic operation a second without stopping, it would take more than 31,000 years to
perform