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Computers in this digital age have become the primary means of completing many tasks in organizations, schools, research institutes, government agencies…

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Presentation on theme: "Computers in this digital age have become the primary means of completing many tasks in organizations, schools, research institutes, government agencies…"— Presentation transcript:

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2 Computers in this digital age have become the primary means of completing many tasks in organizations, schools, research institutes, government agencies… Computer is an electronic device, operating under the control of instructions stored in its own memory, that can accept data, process the data according to predefined set of rules, produce output, and store the results for future use.

3 Types of Computer Super Computers Mainframes MiniComputers Micro Computers

4 SUPER COMPUTERS The most powerful computers in terms of performance and data processing Specialized and task specific computerstask specific computers used for research and exploration purposes very expensive and very large in size Have been used for Space exploration, earthquake studies, weather forecasting nuclear weapon testing The world fastest Super Computer have a capacity of 40 petaflop Its processing speed is measured in floating point operations per second Popular Supercomputers NUDT Tianhe-1A in China is the fastest Supercomputer at a speed of up to 10 petaflop IBM’s Sequoia, in United States Fujitsu’s K Computer in Japan IBM’s Mira in United States IBM’s SuperMUC in Germany

5 MAINFRAME COMPUTERS Also very powerful, but not as powerful as supercomputer Can process and store large amount of data Can serve as server in very large enterprise Also very expensive and very large in size Its processing speed is measured in GigaHertz GHz Popular Mainframecomputers Fujitsu’s ICL VME Hitachi’s Z800 IBM said its zEnterprise EC12 mainframe server peaks at 5.5GHz

6 MINICOMPUTERS Minicomputers are also called as “Midrange Computers used by small businesses & firms. Can serve as server in very large enterprise Not designed for single users Popular Minicomputers K-202 Texas Instrument TI-990 SDS-92 IBM Midrange computers

7 MICROCOMPUTERS Microcomputers are also called as “Personal Computers Personal computer (PC) defines a computer designed for general use by a single person PCs were first known as microcomputers because they were a complete computer but built on a smaller scale than the huge systems in use by most businesses

8 TYPES OF PC Desktop Laptops or Notebook Tablet PCs

9 To do thisPress Display the Open dialog box.CTRL+F12 or CTRL+O Display the Save As dialog box.F12 Open the selected folder or file.Enter Open the folder one level above the selected folder.BACKSPACE Delete the selected folder or file.DELETE Display a shortcut menu for a selected item such as a folder or file. SHIFT+F10 Move forward through options.Tab Move back through options.SHIFT+Tab Open the look in list.F4 or ALT+I Use the Open and Save As dialog boxes To do thisPress Cancel an action.ESC Undo an action.CTRL+Z Redo or repeat an action.CTRL+Y Undo and Redo action

10 To do thisPress Create a nonbreaking space. CTRL+SHIFT+SPACEBAR Create a nonbreaking hyphen. CTRL+SHIFT+HYPHEN Make letters bold.CTRL+B Make letters italic.CTRL+I Make letters underline.CTRL+U Decrease font size one value. CTRL+SHIFT+< Increase font size one value. CTRL+SHIFT+> Decrease font size 1 point.CTRL+[ Increase font size 1 point.CTRL+] PrintCTRL + P Common tasks in Microsoft Word

11 Remove paragraph or character formatting. CTRL+SPACEBAR Copy the selected text or object. CTRL+C Cut the selected text or object. CTRL+X Paste text or an object.CTRL+V Paste special.CTRL+ALT+V Paste formatting onlyCTRL+SHIFT+V Undo the last action.CTRL+Z Redo the last action.CTRL+Y Open the Word Count dialog box. CTRL+Y FindCTRL + F

12 To insert thisPress A fieldCTRL+F9 A line breakSHIFT+ENTER A page breakCTRL+ENTER A column breakCTRL+SHIFT+ENTER An em dashALT+CTRL+MINUS SIGN An en dashCTRL+MINUS SIGN An optional hyphenCTRL+HYPHEN A nonbreaking hyphen CTRL+SHIFT+HYPH EN A nonbreaking spaceCTRL+SHIFT+SPACE BAR The copyright symbolALT+CTRL+C The registered trademark symbol ALT+CTRL+R The trademark symbol ALT+CTRL+T Insert special characters

13 An ellipsisALT+CTRL+PERIOD A single opening quotation mark CTRL+`(single quotation mark),`(single quotation mark) A single closing quotation mark CTRL+'(single quotation mark),'(single quotation mark) Double opening quotation marks CTRL+`(single quotation mark),SHIFT+`(singl e quotation mark) Double closing quotation marks CTRL+'(single quotation mark),SHIFT+'(single quotation mark) An AutoText entryENTER (after you type the first few characters of the AutoText entry name and when the ScreenTip appears)


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