1. COMPUTER  A programmable electronic device that can store, retrieve and process data.  An electronic machine that can be programmed to accept data (input), and process it into useful information (output). Data is put in secondary storage (storage) for safekeeping or later use.  The processing of input into output is directed by the software, but performed by the hardware.

2. Types of Computers Computers can be broadly classified by their speed and computing power.  Personal computer  Workstation  Minicomputer  Mainframe  Super computer

3. Laptops Portable and compact personal computer with the same capabilities as a desktop computer  The primary feature that attracts users to laptops over desktops is their portability  Laptop computers provide users the ability to run the machine using an internal battery or an outside power adaptor

4. Servers A server is a computer that provides data to other computers.It may serve data to system on a LAN or WAN over the internet.  Tower Server : A computer intended for use as a server and built in an upright cabinet that stands alone. The Cabinet is known as Tower.  Rack Server : A computer dedicated to use as a server and designed to be installed in a frame work called a rack. The Rack contains multiple mounting slots called bays.  Blade Server : A server chassis housing multiple thin modular electronics board called server blades

5. servers Web server Mail server Proxy server FTP server Game server

6. Uses of Computers and laptops Uses of work computers Uses of home computers Email Word processing System Management Video Conferencing Communicating Entertainment Data downloading Education

7. USES OF SERVER  Stores and retrieves data  In the workspace to create domains for users  Provides database services  It is used for sharing of files  To send commands and receive responses along with data contents  Dedicated to running certain software applications.  A central search point

8. FUNCTIONALITY OF COMPUTERS

9. COMPUTERS PROCESS DATA BY MEANS OF BINARY SYSTEM  All data in a computer system (words, symbols, pictures, videos, sounds) must be reduced to a string of binary digits, the process of converting data from other formats into binary digits is called digitization.

10. CLIENT-SERVER ARCHITECTURE

11. FUNCTIONS OF SERVER  The outgoing mail server authentication  The auto-reply of mail server  The access to website by password  Access to the sites by using FTP  Secure transmission with SSL  Storing data

12. Latest upcoming Desktops NameApple iMacAcer AspireLenovo Erazer Dell Precision TypeAll-in-OneMainstreamGamingBusiness Processor Name Intel Core i5-4590 Intel Core i5-4440 AMD A10- 7850K Intel Xeon E5 2687W v3 Processor Speed 3.3 GHz3.1 GHz3.7 GHz3.1 GHz RAM8 GB 12 GB32 GB Storage1 TB 2 TB1 TB Graphics Card AMD Radeon R9 M290 Intel HD Graphics 4600 AMD Radeon R9 M260 Nvidia Quadro K6000 OSMac OS X Yosemite Windows 8.1 Windows 7 Professional

13. Latest upcoming Laptops NameApple MacBook Air Origin EON 15-X Toshiba Tecra Dell 7000 Series TypeUltraportabl e GamingBusinessGeneral Purpose Processor Name Intel Core i5-4260U Intel Core i7-4790K Intel Core i5-4210U Intel Core M-5Y71 Processor Speed 1.4 GHz4 GHz1.7 MHz1.2 GHz RAM8 GB16 GB4 GB8 GB Storage128 GB1.24 TB500 GB256 GB Graphics Card Intel HD Graphics 5000 Nvidia GeForce GTX 980M Intel HD Graphics 4400 Intel HD Graphics 5500 OSMac OSWindows 8Windows 7Windows 8

14. Latest upcoming Servers NameDell PowerEdge T620 Lenovo Think Server TS200V Lenovo Flex System x240 M5 TypeRackTowerBlade Processor NameDual Intel Xeon E5- 2650 Intel Corei5Intel Xeon E5-2600 v3 Processor Speed2 GHz3.2 GHz2133 MHz RAM64 GB4 GB64 GB Storage32 TB2 X 250 GB4 TB

15. Advanced Technology Pen with hidden Camera In the revolution of miniature of computers, the scientists are ahead with Bluetooth technology...

16. This pen sort of instrument produces both the monitor as well as the keyboard on flat surfaces from where you can just carry out the normal operations you do on your desktop.

17. A lightweight, foldable roll modelled after storage tubes. The flexible OLED screen and arc-shaped keyboard fold into the tube when not in use, and the carrying strap features a few easy-to-access USB ports.

18. Flexible displays Your laptop, tablet, or e-reader may soon have a flexible display rather than a rigid glass screen that can break too easily. The Skiff Reader, a Kindle-like device designed for newspaper and magazine content, may be the first such model to debut. Its bendable "metal foil" e-paper display is built to last, as are similar monochrome prototypes from LG Display and other tech companies. HP and Arizona State University are developing a flexible color display, as well.Skiff ReaderLG Display flexible color display