500+ Words Essay on Computer
In this essay on a computer, we will discuss the computer, its role in our life, and useful things provided by it. In this modern era, computers have become significant to fulfill all the needs. Right from knowing about the meaning of a word to ordering food or purchasing a cloth, computers are helpful entirely. As time moves, the value of computers is increasing day by day.
Earlier, computers have restricted usage. Nowadays, mankind has depended upon computers in completing their tiny, too big tasks or projects. In every field like designing, educational, medicine, hospitality, defence, agriculture, etc. computers are highly appreciated. Concisely, computers have changed the world radically.
History of Computers
It is tough to judge the exact origin of computers. However, as per experts, it has concluded that the existence of computers was from world word II. It is considered that it was used to record the data. But it was only used by the government, not by the public. When a computer was introduced, it had a very big size and also termed as a heavy machine. As time moves, the size has been reducing. Acer Swift 7 is the thinning computer in the world now.
Earlier, computers were used for professional purposes only. Government firms, big educational centers, and hospitals, IT firms were the users of computers. Nowadays, even three years of a child starts using it in their schools and homes. Thus, the usage of computers become mandatory as a maximum of tasks are being done in it.
Working of a Computer
A computer is an electronic machine. It is used to process information by taking raw information, keep it safely until needs, crushes it as required, and finally ensures the results. This process has different names such as;
- When the information is taken, it is known as input.
- When the information is stored, it is known as memory.
- When it is chewed or split, it is known as processing.
- When results come, it is known as output.
Briefly, a computer takes a three-step cycle named input, process, and output. This same is followed in every step.
Components of Computers
- Input: Input units are mouse and keyboard. Through it, information is getting into the computer to process. Voice recognition and microphone can also use to take the data inside the computer.
- Memory/storage: All the information and documents are stored by the computer in the hard drive. A hard drive is a huge magnetic memory. Besides, the flash memory card is useful for computer-based devices are cellphones, and digital cameras.
- Processing: With a processor, a computer can’t run. It has a central processing unit like a microchip buried deep inside. If you have noticed that, it has a little blowing fan that is used to keep the processor from getting hot.
- Output: The LCD screen is used to show the output in the high-resolution graphics. Inkjet graphics, loudspeakers, etc. are also used as outputs to exhibit the information processed.
Types of Computer
There are four different types of computers, such as:
Supercomputers are the most powerful computers in terms of data processing and performance. Large organizations use these for specific tasks. Even, these play a wide role in exploration and research purposes like NASA. It uses a supercomputer to launch space shuttles, to control them and even for the space exploration purposes. These computers are big in size and also expensive.
Uses of Supercomputers
- Earthquake Studies
- Space Exploration
- Weather Forecasting
- Nuclear Weapons Testing
2. Mainframe Computer
Mainframe computers are not robust like the supercomputers. The government organization and IT firms use mainframe computers for running their business tasks. Like the supercomputers, mainframes computers are also considered as the fastest computers, having the capacity to process large storage of data. Educational institutions, medical centers, and insurance companies use mainframe computers.
Minicomputers are also known as Mid-range computers, used by small enterprises. These are of small sizes and also don’t have a large space to process the data. These computers are not by an individual as only the companies use this sort of computer.
The different kinds of computers that we are using in our day to day life are known as microcomputers like Desktop computers, Laptops, Tablets, Smartphones, and PDA (Personal Digital Assistant). Microcomputers are the cheapest among the above three types. The prominent companies that have manufactured these computers are Apple, Sony, Dell, Acer, HP, and Toshiba.
Uses of Computer in Various Fields
In this digital era, no task can complete without a computer. It becomes a necessity in every field. It makes the task easier and faster. It reduces the paperwork and manual recording of data. Although, computers are used in unlimited areas, the significant areas as mentioned below:
School management, college management, and university management software are available to manage all the activities of the educational institutions. With this software, all the tasks are performed easily and flawlessly. Very few employees are required to manage the educational institutions with this software. All of this software can run only on computers. Moreover, courses, results, syllabus, fee structures, etc. are also be checked in computers.
In medical sectors, computers are not only used to record the data and medical history of patients, but also, these are helpful in diagnosing diseases, performs tests, and also finding the cure of life-threatening diseases.
Computers play an essential role in scientific research, social research, and space research. Because of it, it is possible to keep a check on the environment space. It assists in checking for the galaxies thoroughly. Thus, computers are essential to explore the earth and its activities without going there.
To secure the areas is an important aspect that is possible with the usage of computers. With the help of computers, sustainable activities are recorded. Actions are taken on the fraudulent activities performed. Briefly, defence companies perform 90% of their tasks only on computers to keep an eye on their enemies.
IT Firms and Other Organization
Small to big firm or organization is entirely depended upon the computers to perform their work. No task is done without entertaining computers. Employers use computers for at least 9-10 hours a day. All the communications are done on computers only.
Not only companies or professional sectors use computers. Even it becomes essential for homes. In this technological era, every home has a computer. Even every person has its own personal computer or laptop. Thus, the usage of computers is increasing tremendously.
Threats from a Computer
Besides, offering many advantages, computers also have threats. The hackers steal important information on computers. All the personal and professional data can steal by hackers. In addition to it, computers have other problems like spams, bugs, viruses, etc.
A computer is an electronic machine used to make our tasks easier and instant. The fact is, human civilization can’t survive without the usage of computers. Concisely, it is an appreciated discovery of humankind as a maximum of tasks are dependable on it. Even, it assists to indulge in overseas tasks without reaching there personally. In the coming years, the usage of computers will be infinite. So, learn thoroughly how to use it safely!