[source](https://pin.it/x4tuyegt3r76u4) Mainframe Computers The largest type of computer in common use is the mainframe. Malnframe computers are used in large organizations like insurance companies and banks where many people need frequent access to the same data. which is usually organized into one or more huge database. Airlines use large mainframe systems for flight scheduling, reservations, ticketing, and meeting a range of customer service needs. In traditional mainframe environment, each user works at a computer terminal. A terminal is a monitor and a keyboard connected to a mainframe. These computers are larger in size, expensive, can store huge amount of data (billions of records) and can support thousands of terminals. These computers are basically used in networked environment, as I single user can not utilize their full processing power. IBM 8/390 in an example of mainframe computers. Mmicomputem got their name because of their small size. These computer have less processing power than mainiiame computers but have high processing power than microcomputer Like mainframe, minicomputers can support numbee of usee I Input and output requirements. Normally minicomputers are used in networked environments These computers are less expensive than mainframe computers and are ideal for organizations that could not afford mainframe do not need the processing, power of mainframe computers, 3000 is an cxample of minicomputers **Microcomputer** microcomputer (also referred to as personal computers) are typically developed for indnndual users. These are less powerful machines as compared to mmicompulcrs. h 1961, IBM called its first microcomputer the [BMPC. Within a few years other lnanufacturcrs copied the architecture and IBM compatible computers emerged in market One big factor of the popularity of microcomputers is the low price. PCs are getting powerful day by day because of the improvement in technology. That‘s why the difference beth more powerful microcomputers and less powerful minicomputcrx is vanishing. The most powerful PCs are about as much powerful as a less powerful minicomputer can he. lndmduals are using microcomputers for performing certain tasks. These are also used in busincss, education, and almost every held of life.
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[source](https://pin.it/qhuzws4dxlyvfg) POCKET (PALMTOP) COMPUTER Pocket computers have been designed to allow people to keep lots of information close to hand wherever they happen to be. A pocket computer has to have small. light batteries that last a long. These computers have special operating systems suited to pockct computers. One problem with small computers is that they don‘t have full-sized keyboards attached. These computers use special pens and touch-scnsitive screen to enter data 8 well is a number of small buttons or key . LAPTOP COMPUTER _ The main aim of I laptop is that the persons using it can have all program and data from their desktop computer on I portable computer. The person using I laptop should be able to run all the same software on the laptop as runs on larger, desktop computers as laptOp computers have the same types of operating system as desktop ones. Modem laptops can have floppy drives, CD-ROM drives and CD re-writers, and even DVD drives. They ‘ " have full-sized keyboards and a mouse of a touch sensitive mouse pad, the screen is usually a large liquid crystal(LCD) .
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[source](https://pin.it/xowmctfqk75orb) [9/20, 10:59 PM] 💔💔 love is pain 💘💝: The batteries generally don't last as long as those in a pocket computer and my need recharging more than once a day, depending on the use. DESKTOP COMPUTER At the moment there are two main types of desktop computer available. 1. The Macintosh (made by Apple Computers) 2. Personal Computers (PC,s) Macintosh is usually distinguished by its stylish look and bright colors (thurc 1.9). [9/20, 11:02 PM] 💔💔 love is pain 💘💝: EDUCA TION Educational Institutes, from primary to university level, are using computer learning A large number of learning programs (tutorials) are available elmoat every subject. These provide a one-to-one interaction with the student. The trend examinations is getting popular e.g. GRE, GMAT, SAT etc. are through out the world. Questions are marked by the computer, which chance of committing mistakes. It also makes it possible to announce results in time. Distance learning is a new learning methodology. Computer plays the key role in type 0! teaming. Hundreds of institutes are offering distance-leaming programs. The m not requnred to come to the institute instead they are piovided reading material and and classes us Virtual classroom. In a virtual classroom. the teacher deliver lecture at its ace while the students. connected to a network. may listep to.him at their homet. ions and answers are sent to them via email, @rabiagilani
@rabiagilani