windows keyboard shortcuts overview

Use shortcut keys as a substitute to the mouse when working in windows. Which you could open, close, and navigate the start menu, computer, menus, dialog packing containers, and websites utilizing keyboard shortcuts. Keyboard shortcuts might also make it simpler for you to interact along with your pc.

Click on a heading, or press TAB to spotlight a heading, after which press ENTER.

General keyboard shortcuts

Press                                       To

CTRL+C                                 Copy.

CTRL+X                                 Cut.

CTRL+V                                 Paste.

CTRL+Z                                 Undo.

DELETE                                 Delete.

SHIFT+DELETE                    Delete selected item permanently without placing the item in the Recycle Bin.

CTRL while dragging an item Copy selected item. 

CTRL+SHIFT while dragging an item Create shortcut to selected item.

F2                                            Rename selected item.

CTRL+RIGHT ARROW        Move the insertion point to the beginning of the next word.           

CTRL+LEFT ARROW           Move the insertion point to the beginning of the previous word.

CTRL+DOWN ARROW        Move the insertion point to the beginning of the next paragraph.

CTRL+UP ARROW               Move the insertion point to the beginning of the previous paragraph.

CTRL+SHIFT with any of      Highlight a block of text.

the arrow keys

SHIFT with any of                  Select more than one item in a window or on the desktop,

the arrow keys                        or select text within a document.

CTRL+A                                 Select all.

F3                                            Search for a file or folder.

ALT+ENTER                         View properties for the selected item.

ALT+F4                                  Close the active item, or quit the active program.

ALT+Enter                              Displays the properties of the selected object.

ALT+SPACEBAR                  Opens the shortcut menu for the active window.

CTRL+F4                               Close the active document in programs that allow you to have multiple documents open simultaneously.

ALT+TAB                               Switch between open items.

ALT+ESC                               Cycle through items in the order they were opened.

F6                                            Cycle through screen elements in a window or on the desktop.

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General Computr Knowledge

        Abbreviation:

• ATM : Automated Tailor Machine
• AI : Artificial Intelligence
• ANSI : American National Standard Institute.
• ASCII : American Standard Code for Information Interchange
• ALU : Arithmetic Logic Unit
• BCC : Bangladesh Computer Council
• BCS : Bangladesh Computer Somity
• BIOS : Basic Input Output System
• BASIC : Beginners All-purpose Symbolic Instruction Code
• CPU : Central Processing Unit
• CPM : Control Programme for Microprocessor
• CD : Compact Disk
• DOS : Disk Operating System
• DISIT : Dharmarajika Institute of Science & Information Technology
•  ENIAC : Electronic Numerical Integrator And Computer.
• E-mail : Electronics Mail
• FDD : Floppy Disk Drive
• GPS : Global Positioning System
• GIS : Geographical Information System.
• HP : Hulled Packard
• HDD : Hard Disk Drive
• HTML : Hyper Text Markup Language
• IBM : International Business Machine
• ISP : Internet Service Provider
• IC : Integrator Circuit.
• MAN : Metropolitan Area Network
• MIS : Management Information System.
• RAM : Random Access Memory
• ROM : Read Only Memory
• PDA : Personal Digital Assistance
• LCD : Liquid Crystal Display
• LAN : Local Area Network
• LSI : Large Scale Integrator.
• PLC : Programarable Logic Controller
• PC : Personal Computer
• NS / PS : Nana Second / Pico Second
• NC : Norton Commander
• 3D : 3 Dimensions
• NASA : National Aeronautics and Space Administration
• OS : Operating System
• WAN : World Area Network
• www : World Wide Web

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Classification Of Computer:

There are three varieties of computer learned till now. These as follows:

1.    Analog computer 

2.    Digital computer 

3.    Hybrid computer

ANALOG COMPUTER

The computer, which is able to measure changes in continuous physical & electrical state corresponding to stress,temperature, voltage, size and many others. Is referred to as analog laptop. Analog desktops are used for scientific and engineering functions. A slide rule or a auto speedometer is illustration of analog device.
 

DIGITAL COMPUTER

The computer which represents data with the aid of “ON” and “OFF” reputation is referred to as digital pc. Digital circuitry characters are stored within the binary rotation which is consists of “zero” and “1”, (and is referred to as bit, the smallest unit of knowledge). A digital pc converts information to binary kind in order to system it. It is utilized in data or knowledge processing pursuits.

HYBRID COMPUTER

The combined outcome of analog and digital laptop is known as hybrid laptop. This system
combines the measuring capabilities of the analog laptop and logical and principal capabilities of the
digital pc.

On the groundwork of computing energy, how many types of computer available at present?
Or,
Hybrid pc is labeled into six classes.
Or,
On the groundwork of computing vigor, computer is categorized into six categories.
 

They are as under:

(1) Super computer
(2) Mainframe computer
(3) Micro computer
(4) Mini computer
(5) Personal computer
(6) Laptop computer

SUPER COMPUTER

Super Computer is the most powerful computer systems available today. Super computer systems are very expensive . It is used in scientific areas such as weather forecasting, nuclear weapon development, government agencies etc., where the need for large data based and complex calculation capabilities is required.

MAINFRAME COMPUTER

A mainframe computer can process large amounts of data at very high speeds (10 million
instruction/sec.) and support many input, output and auxiliary storage devices.

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Computer structures

Basically, there are three parts of computer system:


1.      Input Device.
2.      Central Processing Unit/Device.
3.      Output Device.

1.      Input Device :

 An input device is any kinds of device that presents input to a computer. There are many types of possible input devices, but most of the two common ones are keyboard and mouse. You press on the keyboard of any key and you make with the mouse of every movement or click to sends a specific input signal to the computer. There are some examples of input device. Like  mouse, Keyboard, scanner, camera, light pen, joystick, touch sensitive monitor etc.

2.     Central Processing Unit/Device:

The central processing unit (CPU) is called the brain of your computer. It handles all of the instructions you give on your computer, and the faster it does to the  easier. Learn about how can work to a CPU processes instructions and how can work to computer engineers are continuously coming up with ways to make it with go faster. 

3.      Output Device.

  

An output device is any piece of PC hardware gear used to communicate the outcome of information processing applied by using an information processing method (such as a laptop) which converts the electronically generated know-how into human-readable form. There are some example of output device as like Monitor, Printer, scanner, Headphone, Flash Drive, Disk Drive etc.

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Computer History

Computer meaning :

A computer is an electronic device that accepts stores and manipulates information. It is some result based store program and retrieve information from its memory or sequence of instructions how the data is to be on processed. Computer is makes, stores and quick calculations or processes information .Today most of the computers are digital In this way they perform operations with large quantities represented as a electronically digits.


                                                         
History Of the Computer:

Everyone knows that computers come into every aspect of modern life. So the meaning of the word 'computer' has changed in time. In the year of 1930s and 1940s 'a computer' still meant a person which doing calculations. So to indicate a machine can doing calculations we would say 'automatic computer'. In the 1960s people still talked concerning the digital computer as opposed to the analog computer.However at the present time, it is better to reserve the word 'computer' for the from of machine which has swept whole things else away in its path: the computer on which you're reading this web page, the digital computer with 'internally stored modifiable software.' 

first computer creator:


An English mechanical engineer and polymath named  Charles Babbage, who originated the concept of a programmable computer. He is the first general-purpose computing device.  He is called the "father of the computer", he is the first conceptualized and invented mechanical computer in the early 19th century.

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