Free download Principles of compiler design by Alfred V. Aho, Ravi Sethi, Jeffrey D. Ullman.

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Master These Keyboard Shortcuts For Text Editing

Selecting Text

One of the most useful things you can do with text editing keyboard shortcuts is selecting bits of text. It speeds things along a great deal when writing.

Select one character at a time. – Shift+Left or Right Arrow

Select one line at a time. – Shift+Up or Down Arrow Keys

Select one word with each arrow press. – Shift+Ctrl+Left or Right Arrow

Select current paragraph. – Shift+Ctrl+Up or Down Arrow

Select text between the cursor and the end of the current line. – Shift+Home

Select text between the cursor and the end of the current line. – Shift+End

Select all text. – Ctrl+A

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Make Your Computer Speak Whatever You Type

1.Open Notepad and copy and paste the following code into it

Dim message, sapi
message=InputBox("What do you want me to say?","Speak to Me")
Set sapi=CreateObject("sapi.spvoice")
sapi.Speak message

2.Now save the notepad file with the name speak.vbs at your desktop.

3.Now double click on speak.vbs type in the box whatever you want your computer to speak for you.

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Save your data in a Secret notepad

1) Open command Prompt (type cmd in run).

2) You may change to any directory where you want to save that file.

3) Type notepad filename.txt:StoreHiddenData then press enter. here filename is name of file for example if i want to create a notepad file of name secret then i will write notepad secret.txt:StoreHiddenData. This will create a text file secret.txt.

4) A message will be pop up Cannot find the D:\secret.txt:StoreHiddenData.txt file. Do you want to create a new file?, click OK button to proceed create the new file.

5) A notepad will be pop up. Type data that you want to hide from others. Save the file and you are now successfully creating hidden data for this file.

6) close cmd.

A notepad file secret.txt is successfuly created which contains hidden data. When you open secret.txt, it seems empty. Actualy your data is hidden so you are not able to see it. 

If you want to see your hidden data then open cmd and type notepad secret.txt:StoreHiddenData. A notepad file will be pop up which contains hidden data.

Change the password of any computer using command prompt

1. Open Command Prompt, if you don’t know where is it, click Start- All Programs-Accessories-command prompt
2. After you see a black window pop-up type ‘ Net User ‘
3. You will see a little information about all accounts in your computer
4. You should choose account you want to hack
5. For example you want to hack account Sanzar, you should type ’ Net User Sanzar and press enter ‘.
6. Now you are seeing full information about Sanzar’s account
7. For changing Sanzar’s password, you should type ’ Net User Sanzar * ‘ and it then show you how to change Sanzar’s password
8. If you can’t understand the command line, you just type ‘ Net User Sanzar the new password ‘.
9. Say it you want to change Sanzar’s password to 123456, you should type ‘ Net User Sanzar 123456 ‘
10. Now, you successfully change Sanzar’s password to 123456.

N.B.: Do not harm others.

Tips to Quick Access to Windows 7 Functionality

Keyboard shortcut Function

Windows logo key   Open or close the Start menu

Windows logo key+B Select the first icon in the notification area of the

taskbar

Windows logo key+D Minimize all open windows

Windows logo key+E Open the Computer window

Windows logo key+F Open the Search window

Windows logo key+G Select or move between desktop gadgets

Windows logo key+L Lock the computer

Windows logo key+M Minimize all open windows

Windows logo key+Shift+M Redisplay the windows

Windows logo key+P Display the Projection controls

Windows logo key+R Open the Run dialog box

Windows logo key+T Select or move between taskbar buttons

Windows logo key+U Open the Ease Of Access Center window

Windows logo key+X Open the Windows Mobility Center

(portable computers only)

Windows logo key+Spacebar Make all open windows temporarily transparent

(Aero-capable computers only)