TYPES OF COMPUTER
Let us discuss the different types of computers that we see today. Although they belong to the fifth generation they can be divided into different categories depending upon the size, efficiency, memory and number of users. Broadly they can be divided it to the following categories.
1.Microcomputer: Microcomputer is at the lowest end of the computer range in terms of speed and storage capacity. Its CPU is a microprocessor. The first microcomputers were built of 8-bit microprocessor chips. The most common application of personal computers (PC) is in this category. The PC supports a number of input and output devices. An improvement of 8-bit chip is 16-bit and 32-bit chips. ...view middle of the document...
Examples of supercomputers are CRAY YMP, CRAY2, NEC SX-3, CRAY XMP and PARAM from India.
Digital computers are further classified into number of groups depending upon the processing power, functional capabilities and size of memory. Mainframes computers are huge that can occupy the all rooms space easily. These computers are used in Government sectors and in large organizations for secure and critical applications like bilk data processing and ERP. Mainframes have capabilities to host multiple operations systems and virtual machines. Minicomputers are like the mainframe computers, mostly used in business organization and corporate sector. The difference being that it can support the simultaneous working of up to 100 users and is usually maintained in business organizations for the maintenance of accounts and finances. Minicomputers lie in between mainframes and microcomputers In terms of size and processing capacity.
Supercomputers are same as mainframes, less bulky in sizes and are used for high speed calculations and data processing in effectively manners, in the areas of Quantum physics, economic forecasts and engineering designs. Supercomputers have ability of parallel processing and well-designed memory hierarchy that enhances large transaction processing powers. Microcomputers also known as “Personal Computers” are the smallest in size and have small memory and processing capabilities than mainframes and supercomputers. Microcomputers consist of microprocessor and its central processing unit. These are the most frequently used computers specifically designed for home and office users.
Desktops are commonly used computers in today’s world, which are specially built for personal user to be using them at home or work. Desktop computers can be used for communication, entertainment, education, games, internet, word processing and for lot more. Desktop computers are placed on one location permanently as they occupy some space and it is difficult to carry them one place to another easily. Keyboard and mouse are attached for input and for output monitors/LCD are attached with desktop PC. Laptops also known as Notebook are portable computers. Such type of computers can be carried any where easily. The people in the business have to travel a lot, laptops are suitable for them to have their personal data with them everywhere. The main idea about notebooks is same as desktop but with lighter weight and size for mobile use. Keeping mobility of computers in mind, rechargeable batteries are installed laptops. Now, Netbooks, enhanced version of notebooks, much lighter in weight with high performance ability, are now available in market.
PDAs (Personal Digital Assistant) are handheld personal computers; these are small enough to be fit in human hands. PDA has a touch screen and a memory card for storage of data. WiFi technology is used in PDAs for internet and for...