The computer is an electronic device used to perform simple as well as complex arithmetical operations. Computers also hugely differ in shapes, sizes, and efficiency.
Short and Long Paragraphs on Computer
Paragraph 1 - 100 Words
A computer is an electronic machine. It takes human instructions, processes it and then presents output. The computer has three main components – the input (I/P) device, Central Processing Unit (CPU) and output (O/P) device. The input device (I/P) is used to feed the instructions. The CPU processes it and the output device (O/P) displays the output.
A computer understands only machine language. The instructions given to a computer are in the form of programs. Due to their efficiency, computers are widely used in offices today. Computers can perform complex tasks within a fraction of seconds with the utmost precision. Internet runs on computers and millions of computers across the world are interconnected.
Paragraph 2 - 120 Words
A computer is an electronic machine that can perform complex tasks. It takes instructions from humans and produces the desired output (O/P). The computer has a Central Processing Unit (CPU) which functions as its brain.
The CPU of a computer consists of the Arithmetic Logic Unit (ALU) and Memory Unit. The ALU performs complex arithmetical operations while the Memory Unit stores information and data. Since the computer revolution of the 1970s, computers have much improved in efficiency and speed.
A device used to feed input (I/P) into the computer is called the Input Device, whereas, the device used to display the output (O/P) is called Output Device. The Input (I/P) and Output (O/P) devices are called Peripheral devices. Today computers are widely in use in offices and as personal computers.
Paragraph 3 - 150 Words
A computer is a machine that is programmable and performs complex tasks. It understands only a specific language, called machine language. Instructions fed into the computer are transformed into machine language for it to understand. The Central Processing Unit (CPU) of a computer processes the instructions/commands and presents output (O/P) accordingly.
No other machine could beat a computer in speed and accuracy. The concept of a programmable computer was introduced by Charles Babbage, a British Mechanical Engineer. Charles Babbage is also known as the father of the computer.
The computer can be used for a variety of purposes like - perform complex tasks, store a large amount of data, send emails, using the internet, playing games, etc. You can make presentations, spreadsheets and watch videos on a computer. The Internet is also accessible through computers.
There are millions of interconnected computers, sharing information, throughout the world. Computers, today have become the backbone of every business transaction and all the concerned information is stored in computers.
Paragraph 4 - 200 Words
A computer is an electronic device that has two basic functional elements – hardware and software. Hardware is a physical part of the computer, such as a keyboard, mouse, motherboard, monitor, etc. Software is the command that interacts with the hardware and instructs it to perform a certain operation.
Without software, the hardware components of a computer become redundant. For a computer to be useful, both hardware and software are required. Different computers have different software, depending on the hardware configuration and other requirements.
Computers are versatile. Today computers of different shapes, sizes and configurations are in use in houses, offices, schools, and hospitals, etc. They are used for a number of tasks like – generating bills, storing data, maintaining a record, communication, etc.
High-performance computers are used in the defense establishment and other projects with high complexity and requiring a great degree of accuracy. Today, we depend so much on computers that they have become an integral part of our personal and professional life.
Most of the works in a modern office will come to a halt when its computers are not working. Humans have become too dependent on computers for their everyday essential work, which isn’t a good sign. The whole civilization will be helpless in case the computers stopped working.
Paragraph 5 - 250 Words
Computers are machines that can perform complex tasks on the instructions given by humans. The computer has a long history of evolution. Computers were in use in WWII (1939-1945) but those were very large and required huge spaces. The United States had developed its own large computer during the Second World War. It was built by IBM (International Business Machines) and named Harvard Mark 1.
The WWII computers were strictly used by the governments only and common people had no access to them. Today the computers have evolved to be much compact and efficient. A desktop can be kept on a medium-size study table, while a laptop can be kept on your lap and carried away with hands.
Several devices called peripheral devices can be connected to a computer. Mouse, keyboard, speaker, printers, laser pen, scanners are some of the common peripheral devices. Based on their efficiency and design, computers are classified as supercomputers, microcomputers, mainframe computers, desktops, laptops, PDA (Personal Digital Assistant), etc. The mobile phone is also a kind of computer and a quite handy one at that.
Computers today are widely used in every field ranging from medical, education and transportation to research, designing, defense and operating satellites. Many complex tasks could be easily performed by computers. A computer can be programmed to successfully launch a satellite in a definite orbit and also retrieve data from it for its life span. The efficiency and accuracy of computers have made them widely popular and useful.