Computer Science

Uses of Computer

Today, computers are used in every field and have made different tasks very easy. A person who uses a computer is a computer user. Computer users or end users use computers to perform different tasks or obtain information.

Some examples of computer user areas are as follows:

    • An accountant electronically prepares a client’s tax.
    • An office worker using a word processing program to create a later
    • A supervisor using a computer to check the manufacturing
    • A parent sending an email to the child’s teacher
    • A college student researching a topic online
    • A child playing a computer game
    • A person shopping online

Positive Impacts of Computers on Society

The computer has made a very vital impact on society. It has changed the use way of life. Computer technology has affected every field of life. People are using computers to perform different tasks quickly and easily. The use of computers makes different tasks easier. It also saves time and effort and reduces the overall cost to complete a particular task.

Many organizations are using computers for keeping records of their customers. Banks are using computers for maintaining accounts and managing financial transactions. The banks are also providing the facility of online banking. Customers can check their account balance by using the Internet. They can also make financial transactions online. The
transactions are handled easily and quickly with computerized systems.

People are using computers for paying their bills. They are getting information by using computers to manage the Internet: They are also their home budget etc.

The computer can be used in the education field to improve the teaching and learning process. A computer is used in colleges to provide the methods of teaching in different ways. It is used to educate the students effectively. Many computer-based educational programs are available. The students can learn to read, count, and speak a foreign language. Many educational games are becoming popular among students.

Moreover, the computer is being used in every field of life such as medicine, business, industry, airline and weather forecasting, etc.

Disadvantages / Negative Impacts of Computer

The use of computers has also created some problems in society which are as follows:


Different tasks are performed automatically by using computers. It reduces the need of people and increases unemployment in the society.

Wastage of Time & Energy

Many people use computers without a positive purpose. They play games and chat for a long period of time. It cause:
wastage of time and energy.

Data Security

The data stored on a computer can be accessed D unauthorized persons through networks. It has created serious
problems for data security.

Computer Crime

People use the computer for negative activities. They hack the credit card numbers of people and use them for shopping.

Privacy Violation

Computers are used to store the personal data of people The privacy of a person can be violated if the personal and
confidential records are not protected properly.

Health Risks

The improper and prolonged use of computers can result in injuries or disorders of the hands, wrists, elbows, eyes, neck, and back. Users can avoid health risks by using the computer in the proper position. They must also take regular breaks while using the computer for a longer period of time.

Impact on Environment

Computer manufacturing processes and computer waste are polluting the environment. The wasted parts of computers can release dangerous toxic materials. Green computing is a method to reduce the electricity consumed and environmental waste generated when using a computer. It includes recycling and regulating manufacturing processes. The used computers must be donated or disposed of properly.

Uses of Computer at Home

Computer can be used at home in the following ways:

1. Home Budget

The computer can be used to manage the home budget. The user can easily calculate expenses and income. It is easy to list all expenses in one column and income in another column. Different types of calculations can be applied to the columns to plan a home budget.

2. Computer Games

An important use of computers at home is playing games. Different types of games are available. These games are a source of entertainment and recreation. Many games are available that are specially developed to improve your mental capability and thinking power.

3. Working from Home

People can manage office work at home. The owner of works of the employees from home. The company can check the can control his office while sitting at home.

4. Entertainment

People can find entertainment on the Internet. They can watch movies, listen to songs, and download different stuff. They can also watch live matches on the Internet.

5. Information

People can find any type of information on the Internet. Educational and informative websites are available to download books, tutorials, etc. to improve knowledge.

6. Chatting

People can chat with their friends on the Internet. They can also talk with them. Different messages, files, and information can be sent to them.

Uses of Computers in Education

The educational institutes of primary to university level are using computers for various learning activities. Many programs are available for students to learn different subjects like physics, chemistry, biology, and mathematics, etc. The multimedia software makes the learning process interactive and interesting. It combines text, graphics, audio, and video. Computer and multimedia projectors are also used in the classrooms to educate the students effectively.

1. Computer-Based Training (CBT)

CBT are different programs that are supplied on CD-ROM. These programs include text, graphics, and sound. Audio and video lectures are recorded on the CDs. CBT is a low-cost solution for educating people. You can train a large number of people easily.

Benefits of CBT

Some benefits of CBT are as follows:

    • The students can learn new skills at their own pace. They can easily acquire knowledge at any available time of their own choice.
    • Training time can be reduced.
    • It is interactive, attractive, and easy material. It encourages students to learn the topic.
    • Planning and timing problems are reduced or eliminated.
    • The skills can be taught at any time and at any place.
    • It is a very cost-effective way to train a large number of students.

2. Computer-Aided Learning (CAL)

Computer-aided learning is the process of using information technology to help teach and enhance the learning process. The use of computers can reduce the time that is spent on preparing teaching material. It can also reduce the administrative load of teaching and research. The use of multimedia projectors and slides has improved the quality of teaching. It has also helped the learning process.

3. Online Education

Many websites provide online education. You can download educational material, books, and tutorials without going outside. Some universities provide online lectures for students. Students can ask questions and discuss problems by sending emails to websites

4. Distance Learning

Distance learning is a new learning methodology. The computer plays a key role in this kind of learning. Many institutes are providing distance learning programs. The student does not need to come to the institute. The institute provides the reading material and the student attends a virtual classroom. In the virtual classroom, the teacher delivers lectures at his own workplace. The student can attend the lecture at home by connecting to a network. The student can also ask questions to the teacher. The answers are given to the students by email.

5. Online Examination

The trend of online examinations is becoming popular. Different examinations like GRE, GMAT, and SAT are conducted online all over the world. The computer. It minimizes the chance of mistakes. questions are marked by computer. It minimizes the chance of mistakes. It also enables to announcement of the result in time.

Uses of Computers in Business

Computer is widely used in business to improve productivity. Many business activities are performed more quickly and efficiently using computers. The computer is used to prepare business documents paperwork and cost. like reports, charts, presentations, invoices, etc. It reduces the

Computer systems are used to store the record of can be made from anywhere in the world with huge transactions. The transactions help of computers and the Internet. The computer also helps to stay in contact with the employees and the customers.

The computer can be used in business as follows:

1. Marketing

A business organization can use computers for marketing its products. Marketing applications provide information about the products to customers. The computer is also used to manage the distribution system, advertising, and selling activities. It can also be used in deciding pricing strategies.

2. Stock Exchange

The stock exchange is the most important place for businessmen. Many stock exchanges use computers to conduct bids. The stockbrokers perform all trading activities electronically. They connect with the computer where brokers match the buyers with sellers. It reduces cost as no paper or special building is required to conduct these activities.

3. Banks

Banks are using powerful computers to perform millions of transactions. Banks are providing the facility of ATMs. All ATMs are computerized and connected together through a computer network. People can draw money from ATMs at any time.

Many banks are now providing online banking. The customers can connect to the bank using the Internet. They can see the bank account status at home. They can also conduct online transactions from home. It reduces the staff and building of banks. Many customers pay their bills from their bank accounts using this facility.

The banks are also providing mobile banking or M-banking. It is a process of performing banking activities using a mobile device. The user can perform all types of banking transactions using mobile devices such as smartphones.

3. Retail Stores

The use of computers in retail stores has made business activities fast and accurate. The cashier can enter sales data into the computer using a barcode reader. The barcode contains the price of the item. The computer uses this input to calculate the bill. The record of sale IS stored in the computer. This record can be used to analyze accounts and stock inventory.

4. E-Commerce

E-Commerce or Electronic Commerce is a process of buying and selling products or services using the Internet. It is a very easy and flexible way of buying and selling. It has become very popular nowadays. People can buy and sell products at make payments using credit cards etc. any time. They can

5. Office Automation

Office automation is the process of using computers and communication technology to perform different tasks in offices. It can be used to create letters, reports, spreadsheets, graphs, and images and send or receive emails over the network. It allows the user to improve productivity with less human effort. It also helps in saving money.

Uses of Computers in Manufacturing

Computers are widely used in the manufacturing industry. They are used to design the product and automation of manufacturing process. The computer-aided design (CAD) is the use of computer and graphics software to create a product design. The computer-aided manufacturing (CAM) is the use of computers to plan and manage production operations.

Robots are frequently used in CAM environments. Robots are used to control many complex tasks. A robot is an automatic programmable machine. They are used in different manufacturing industries to carry out different processes. For example, Cars are assembled by computer-controlled robots. These systems work more quickly than Human beings. The products are manufactured with accuracy and consistency. It allows manufacturing a large number of items without any break and using less number of people.

Uses of Computers in the Medical Field

Computer can be used in the medical field in the following ways:

1. Hospital Administration

Hospital IS an important organizations. The computer can be used for the administration of a hospital. The accounting, payroll, and stock system of the hospital can be computerized. The computer can be used to keep a record of different medicines, distribution and use in different wards, etc.

2. Recording Medical History

The computer can be used to store the medical history of patients. It may include important facts about the patients such as past treatment, suggested medicines, and their results. The systems can be very effective and helpful for doctors.

3. Monitoring Systems

Some serious patients must be monitored continuously. Monitoring is needed especially in operation theatres and intensive care units. Many are used to monitor blood pressure, and heartbeat, and computerized devices are the brains of the patients.

4. Life Support Systems

Life support systems are used to help disabled persons Many devices help deaf persons to hear. Scientists are trying to create a device that will help blind people to see.

5. Diagnosis of Diseases

Different software is available that stores different diseases and their symptoms. Diagnosis of the disease is possible by entering the symptoms of a patient. Many computerized devices are used in laboratories for different tests of blood etc.

Use of Computer in Airline System

Computers are used in airline systems to control aircraft and vehicles. Modern aircraft are controlled by sending electronic signals to different parts of the aircraft. The computer is embedded in the pilot’s controls. The pilot can interact with the control room at different airports during his flight. The computer is also used in airline systems for reservation of seats for customers. It is used to provide information about different flights etc.

Use of Computer in Weather Forecasting

Computers are also used in weather forecasting. A computerized weather forecasting system gets the data from different weather stations and satellites etc. The system generates a forecast for the weather. Weather forecasting is very complex. Perfect forecasting is very difficult and there is always a possibility of variation in the weather. Different organizations use computerized weather forecasting systems.

Use of Computers in Library

A computer is also being used in libraries. It is used to maintain the records of books and library members. Any person can search for the required book in the library. The search can be done by book name, author or publisher, etc. The computer can search for the required book quickly. The librarian can also know about the list of books that have not been returned on the due date. He can send a warning to the members who have not returned the books. All tasks in a library can be performed more easily and quickly with the help of a computer.

Use of Computers in Defense

The computer is widely used in the defense field. Modern weapons and missile systems are guided by computers. The missile system uses a GPS system and computers to find its target. The computer is also used to control the aircraft without pilots and drones. Computers are also used in tanks, planes, and ships to target the enemy. The army uses computers to maintain records, and design and test new systems, It IS also used during the war for secure communication among army personnel.

Use of Computers in Media and Entertainment

The computer is widely used in print and electronic media. It is used in print media to prepare newspapers, magazines, brochures, and books, etc. Electronic media includes radio, television, and social media over the Internet. The computer is used in electronic media to prepare documentaries, animations, and graphics, etc. Social media use computers and the Internet to communicate with the people over the Internet such as through blogs and online newspapers etc.

The computer is also used in the entertainment industry. People can use computers to watch television shows on the Internet. They can also watch movies, listen to music, and play games on the computer. The computer is used to create animation and special effects for TV commercials, movies and cartoons.

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