Computer Fundamentals
Computer is one of the miracles of modern technology. In today's world, computer has become very essential. computer is an electronic device that receives data, process the data according to the set of instructions, stores data and gives the desired output. computer can be perform various tasks. data storage and processing are the important tasks performed by the computer.
Computer is widely used in each and every aspect of our day-to-day life by millions of people in the whole world. It is used to perform various mathematical calculations and financial transactions quickly in Bank. Scientist use computer for scientific applications like analyzing the weather condition, research and chemical. Computer Provides the speediest means of communication through Internet. We can use Internet for education and training purposes. We can use the Computer for entertainment, such as for watching movies, using DVDs, listening to music using CDs and MP3s. We can also download software, graphics, music, and movies from the Internet using the Computer.
It would be difficult to imagine today's world without the Computer.
Types of Computer
A Computer is one of the bright creations of mankind. Computers perform a vast range of functions. Some Computers are so powerful that hundreds or even thousands of users can use them at a single instant. Computers have different types of capabilities and are of different sizes. Classification of computers is based on the usage, speed and size of computers.
There are four main types of Computers, namely Micro Computers, Mini Computers, Mainframes and Super Computers.
1. Micro ComputerMicro Computer, also known as Personal Computer (PC), is a digital computer that works on a Microprocessor. Micro Computers are small machines designed for individual users. Average people who have a basic knowledge of computers can use Micro Computers.
Benefit:
1. Small Size
2. Low Cast
3. Portable
2. Mini Computer
Mini Computer is a mid sized multiprocessing and multi-user computer. Multiprocessing is the process of running multiple programs or process at a given time. The Mini Computer is a medium range Computer. It is also known as the mid-range Server. It is used in business organizations for the maintenance of accounts and finance data and applications.
Benefit:
1. Low Cost
1. Low Cost
Mini Computers are ideal for small-sized companies, in the manufacturing process and scientific research.
3. Main Frame
Initially, Mainframes were huge computers occupying entire rooms or floors. Mainframes were used to serve as the center of large systems in companies. They were designed to serve the purpose of centralized computing instead of the distributed computing. with the development in the field of computing, the size of Mainframes has reduced and the processing efficiency has increased.
Benefit:
1. Large Memory
1. Large Memory
Mainframes are widely used in large companies worldwide. Mainframes are widely used in government organizations.
4. Super Computer
Super Computer is the fastest and most expensive type of computer. Super Computer specialize in high-speed processing of data. Applications that use large amounts of calculations use Super Computers. Some of these applications are molecular chemistry, nuclear research, weather reports and advanced physics.
Super Computer can be a single or multiple computer system. In multiple computer system, a Super Computer consists of several computers that work in parallel as a single system.
The advantage of Super Computers is their speed, which is unmatched by any other type of computer. A major disadvantage of Super Computers is that they generate a large amount of heat during their operation.
Examples of Super Computers are Cry Jaguar, IBM Roadrunner, IBM NORC etc.
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