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Modern day computers
- 1. Modern day computers Read& free download more articles on www.dailyict.com
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- 3. Modern-day Computers • Modernday computers are much advanced than earlier computers. • According to the size and functionality modern computers can be categorized as follows, – Personal Computers – Network Servers – Mini-Computers – Mainframe Computers – Supercomputers
- 4. Personal Computers • ThePersonal Computers (PC) are one of the most commonly used computer types in the world. • Only one user can work with the computer at a time. • In 1975 IBM introduced its first personal computer (PC). • The model name of that is – 5100 had, – 16KB of memory – built-in 16 x 64 character display – Built-in BASIC language interpreter.
- 5. PC cont……….. • Alsoknow as micro-computers because of the size of the computer system. • The following are some types of personal computers, – Desktop Computers – Workstations – Notebook computers – Tablet PCs – Hand-held personal computers – Smart Phones
- 6. Desktop Computers • Typeof a personal computer and as the name implies it is meant to be placed on a desk or a table. • Desktop computers are not meant to be carried around. • Normally a desktop computer is meant to be used by a single user at a time. but is mostly can be shared in real use. • Two kind of Desktop computers, – Flat-bed – Tower oriented • Desktop computers consist with a system unit which contains important parts of a computer system such as the microprocessor, HDD, memory, FDD………..
- 7. Workstations • Special typeof personal computer, which is powerful than Desktop computers. • It is a specialized computer mostly used by a single user. • Workstations are more popular among scientists, video production crowd, animators, engineering designers etc • Due to its powerful capabilities it have ability to perform complex tasks much faster.
- 8. Notebook Computers • As thename implies notebook computers takes the shape of a thin-book. • Specially designed for the mobile purpose. (portable usage) because they are less weight and very compact. • These computers can kept on the lap as well, therefore also know as ‘Laptop computers’. • These computers also enhanced with a built in battery, because of that they can be used without the power for sometime. (At least 1 hr)
- 9. Tablet PCs • Fullequipped mobile computers which have all the features of Notebooks plus more.
- 10. Tablet PCs Cont…. •Tablet PCs have a special-pen. (Digital-Pen) • Using that users can give the inputs through the touch screen of the Tablet. • For clicking purpose and taking down notes users can use the pen. • Some Tablets supports voice commands too. • Tablet PCs run special versions of certain software programs.
- 11. Hand-held personal computers • Verysmall personal computers which are can held on your hand, • specially use for, – Taking notes – To have your phone book contacts and address book contacts – To have your appointment organizer – To access a day calendar – To access to the Internet (Using Wire-less tech.) • Popular type is PDA (Personal Digital Assistant)
- 12. Smart Phones • Smartphones are special featured mobile phones. • Smart phones are much bigger when compared to a normal phone. • Some of them enhance with a keyboard. • Special functions like access Internet, checking E- mails…..can be done while it using as a computer. • Also smart phones have built in digital cameras and music players.
- 13. Network Servers • Maincomputer within a network. • Using a Server within a network will enables, – Data sharing facility – Controllability – Reliability of Data – Ease of access – Share other Hardware (Printer/Scanner ) – Share Internet connection – Databases accesses • The performances of the Server machine usually higher than other PCs (Clients) of the Network. • The users of the network also defined by using the Server.
- 15. Minicomputer • The extendedversion of Network Servers. • But have more performance than normal network server. • More featured for enable multi-user functionality. • Minicomputer can connect more Network servers with clients at a time.
- 16. Mainframe Computers • Muchlarger powerful system. • Can handle many Net. Servers, Minicomputers & Clients (PCs) at a time. • A large mainframe computer can handle even more than 1000 users at a time. • But mainframes are less-flexible. Because one mainframe can perform limited number of tasks. • Most of the times Mainframes are company oriented. E.g.- A Mainframe within a company cant be use by another company for a different purpose.
- 18. Mainframes Cont…….. • Usersconnect to Mainframe via Terminals. • Use in, – The banks to handle the banking systems – The airline companies to handler the flight reservations – The motor department to store the details about registered vehicles Terminal
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- 20. Supercomputers Cont………….. • Mostpowerful computers currently available. • Main features are, – Complicated – Expensive – Use state-of-the-art (Modern tech. at its best) • Supercomputers are designed to perform large amounts of workloads. • A supercomputer may have thousands of micro-processors in it and provides processing speeds.
- 21. Supercomputer cont….. • Supercomputersuse in the simulation and modeling of complex systems. E.g.- -Weather -Chemical processes -US economic predictions -Motion of galaxies (by NASA)
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