COMPUTERS Computers are like Old Testament gods; lots of rules and - - PowerPoint PPT Presentation

COMPUTERS

“Computers are like Old Testament gods; lots of rules and no mercy.”

WHAT IS A COMPUTER?

A computer is an electronic device, operating under the control of instructions stored in its

• wn memory.

Collects Processing Produces

(Input) (Output)

CHARACTERISTICS OF COMPUTER

• 1. Speed: Computer is very fast

and accurate device.

• 2. Accuracy: Computer results

are highly accurate.

• 3. Memory: Computers have a

large amount of memory to hold a very large amount of data or information.

CHARACTERISTICS OF COMPUTER

• 4. Diligence: Computer is free

from problems like lack of concentration and confusions & tiredness.

• 5. Versatility: We can perform

different types of tasks on computer.

• 6. Power of Remembrance:

Unlike humans, computer can store things for unlimited period of time.

POWE R OF CRE ATI VI TY

THE COMPONENTS OF A COMPUTER

Input Device: Allows you to enter data and instructions into a computer. Output Device: Hardware component that conveys information to one or more people. System Unit: Case that contains the electronic components of the computer that are used to process data. Storage Device: Holds data, instructions, and information for future use. Communications Device: Enables a computer to send and receive data, instructions, and information to and from one

• r more computers or mobile devices

ADVANTAGES

• Speed
• Reliability
• Consistency
• Storage
• Communications

DISADVANTAGES

• Health Risks
• Violation of Privacy
• Public Safety
• Impact on Labor Force
• Impact on Environment

NETWORKS AND THE INTERNET

A network is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media

C O M P U T E R S O F T W A R E

D e s k t o p o r w e b a p p

A B C D E F I H G

S o f t w a r e , a l s o c a l l e d a p r o g r a m , t e l l s t h e c o m p u t e r w h a t t a s k s t o p e r f o r m a n d h o w t o p e r f o r m t h e m

C A T E G O R I E S O F C O M P U T E R S

C O M P U T E R A P P L I C A T I O N S I N S O C I E T Y

S c i e n c e

P u b l i s h i n g T r a v e l

M a n u f a c t u r i n g