USING THE PERSONAL COMPUTER

1. INTRODUCTION
A Computer is a machine that performs tasks, such as simple and complicated scientific calculations, electronic
communication, and transactions under the set of instructions called “a program”. These days Computers are used to
perform versatile activities with reliability, accuracy and speed.
In Business, computers track inventories with bar codes and scanners, billing of customers, and transfer funds
electronically, track attendance and generate payroll, store records/data in extensive quantities with a never before ease.
At Homes, tiny embedded computers control the indoor temperature, operate home security systems, turn videocassette
recorders on and off. Computers also Entertain working as a music system, video player gaming zone, etc.
Computers in Automobiles regulate the flow of fuel, thereby increasing gas mileage.
Academicians and Institutions use computers to track grades and prepare notes; with computer-controlled projection
units, they can add graphics, sound, and animation to their lectures. Computer based trainings is the futuristic method of
training and imparting education. It has reduced the cost of spreading education without compromising on the quality
phenomenally.
Computers are used extensively in Scientific Research to solve mathematical problems, display complicated data, or
model systems that are too costly or impractical to build, such as testing the air flow around the next generation of space
shuttles. The Military employs computers in sophisticated communications to encode and unscramble messages, and to
keep track of personnel and supplies.
In Routine Lives, computers come in usage while booking train & airplane tickets, withdrawing cash from bank, driving
cars, traffic lights, watching TV, listening Radio, although their usage cannot be seen or felt, but it completes the
requested transaction in the backend.
In Communication, Computers play an intrinsic role in provision of Internet, Email, Mobile, SMS, Telephone services
today, the primary means of communications.