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Showing posts with label INTRODUCTION TO COMPUTERS. Show all posts
Showing posts with label INTRODUCTION TO COMPUTERS. Show all posts

Sunday 22 October 2017

Computer Fundamentals - Computer Applications

In this chapter, we will discuss the application of computers in various fields.

Business

A computer has high speed of calculation, diligence, accuracy, reliability, or versatility which has made it an integrated part in all business organizations.

Computer is used in business organizations for −

  • Payroll calculations
  • Budgeting
  • Sales analysis
  • Financial forecasting
  • Managing employee database
  • Maintenance of stocks, etc.

Banking


Today, banking is almost totally dependent on computers.

 


Banks provide the following facilities −

Online accounting facility, which includes checking current balance, making deposits and overdrafts, checking interest charges, shares, and trustee records.

ATM machines which are completely automated are making it even easier for customers to deal with banks.

Insurance


 



Insurance companies are keeping all records up-to-date with the help of computers. Insurance companies, finance houses, and stock broking firms are widely using computers for their concerns.

Insurance companies are maintaining a database of all clients with information showing −

Procedure to continue with policies
Starting date of the policies
Next due installment of a policy
Maturity date
Interests due
Survival benefits
Bonus

Education







The computer helps in providing a lot of facilities in the education system.

The computer provides a tool in the education system known as CBE (Computer Based Education).

CBE involves control, delivery, and evaluation of learning.

Computer education is rapidly increasing the graph of number of computer students.

There are a number of methods in which educational institutions can use a computer to educate the students.

It is used to prepare a database about performance of a student and analysis is carried out on this basis.

Marketing


 

In marketing, uses of the computer are following −

Advertising − With computers, advertising professionals create art and graphics, write and revise copy, and print and disseminate ads with the goal of selling more products.

Home Shopping − Home shopping has been made possible through the use of computerized catalogues that provide access to product information and permit direct entry of orders to be filled by the customers.

Healthcare






Computers have become an important part in hospitals, labs, and dispensaries. They are being used in hospitals to keep the record of patients and medicines. It is also used in scanning and diagnosing different diseases. ECG, EEG, ultrasounds and CT scans, etc. are also done by computerized machines.

Following are some major fields of health care in which computers are used.

Diagnostic System − Computers are used to collect data and identify the cause of illness.

Lab-diagnostic System − All tests can be done and the reports are prepared by computer.

Patient Monitoring System − These are used to check the patient's signs for abnormality such as in Cardiac Arrest, ECG, etc.

Pharma Information System − Computer is used to check drug labels, expiry dates, harmful side effects, etc.

Surgery − Nowadays, computers are also used in performing surgery.

Engineering Design

Computers are widely used for Engineering purpose.

One of the major areas is CAD (Computer Aided Design) that provides creation and modification of images. Some of the fields are −

 



Structural Engineering − Requires stress and strain analysis for design of ships, buildings, budgets, airplanes, etc.

Industrial Engineering − Computers deal with design, implementation, and improvement of integrated systems of people, materials, and equipment.

Architectural Engineering − Computers help in planning towns, designing buildings, determining a range of buildings on a site using both 2D and 3D drawings.

Military


Computers are largely used in defence. Modern tanks, missiles, weapons, etc. Military also employs computerized control systems. Some military areas where a computer has been used are −





 



Missile Control
Military Communication
Military Operation and Planning
Smart Weapons

Communication

Communication is a way to convey a message, an idea, a picture, or speech that is received and understood clearly and correctly by the person for whom it is meant. Some main areas in this category are −





 


E-mail
Chatting
Usenet
FTP
Telnet
Video-conferencing
 

Government

Computers play an important role in government services. Some major fields in this category are −

 




Budgets
Sales tax department
Income tax department
Computation of male/female ratio
Computerization of voters lists
Computerization of PAN card
Weather forecasting

Wednesday 16 September 2015

INTRODUCTION TO COMPUTERS

TYPES OF COMPUTERS

Computers come in different sizes. Some are big while others are small.

Desktop Computer
  • This computer is kept on a desk. It is also known as the PC or personal computer.
  • A PC has a keyboard, a mouse, a monitor and a CPU.
  • A desktop computer is heavy and is difficult to carry from one place to another.

Laptop

  • It is a computer which you can keep on your lap.
  • It is small in size and light in weight. It can be easily carried from one place to another.
  • A laptop works on a battery.

Palmtop
  • It is smaller than a laptop and can fit on your palm.
  • A palmtop also works on a battery.

INTRODUCTION TO COMPUTERS

COMPUTER AND MAN



Computers are one of the greatest wonders created by man. It is a wonderful machine. But, it cannot work on its own. 


  •  A computer can work very fast. It can perform large number of calculations in seconds. Man cannot work as fast as a computer.
  •  A computer does not get tired. It can keep working for long hours. Man gets tired if he works for long hours.
  •  A computer can remember lots of information in its memory. Man can forget things.
  •  A computer does not make mistakes. It gives correct results. Man can make mistakes.
  • A computer does not get bored of doing the same work many times. Man gets bored if he does the same work many times.
  • A computer cannot think and does not have any feelings. Man can think and has feelings.
  • A computer cannot take decisions. It works according to the instructions given by man. Man can take his own decisions.
  • A computer runs on electricity. Man does not need electricity for doing work.



INTRODUCTION TO COMPUTERS

Computer - A Smart Machine


 

A Computer is an electronic machine. It is used at many place.

A computer makes you do your work easily and quickly.

It works very fast. A computer has a memory like us.

A computer can be used to watch cartoons, make drawings, solve sums, and play games.


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