USB

Universal Serial Bus (USB) is developed in mid-1990's that defines the cables, connection and communication between computers and electronic devices.
USB was basically designed to standardize the connections of computer peripherals such as keyboards, pointing devices etc. and other electronic devices and PDAs

History

A group of seven companies began the development of USB in 1994: Compaq, DEC, IBM, Intel, Microsoft, NEC, and Nortel.The goal was to make it fundamentally easier to connect external devices to PCs by replacing the multitude of connectors at the back of PCs, addressing the usability issues of existing interfaces, and simplifying software configuration of all devices connected to USB, as well as permitting greater data rates for external devices. A team including Ajay Bhatt worked on the standard at Intel. The first integrated circuits supporting USB were produced by Intel in 1995.

Versions

Ports

Well Known Ports: 0 through 1023. 
Registered Ports: 1024 through 49151. 
Dynamic/Private : 49152 through 65535. 

TCP ports use the Transmission Control Protocol. TCP is the most commonly used protocol on the Internet and any TCP/IP network. Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Guaranteed communication/delivery is the key difference between TCP and UDP. 

UDP ports use the Datagram Protocol, a communications protocol for the Internet network, transport, and session layers. Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) and makes possible the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming, where dropping some packets is preferable to waiting for delayed data.

Windows Hidden Applications and Shortcuts.

Hi friends as you know computers and windows can give many more than we can think of there are some hidden features which windos give or may be it can be done by various long process and number of mouse clicks. In this post i am supplying the shortcuts of most of the windows features. Just type the command in run window..

Accessibility Controls - access.cpl
Accessibility Wizard - accwiz
Add Hardware - Wizardhdwwiz.cpl
Add/Remove Programs - appwiz.cpl
Administrative Tools control - admintools
Adobe Acrobat (if installed) - acrobat
Adobe Designer (if installed)- acrodist
Adobe Distiller (if installed)- acrodist
Adobe ImageReady (if installed)- imageready
Adobe Photoshop (if installed)- photoshop
Automatic Updates - wuaucpl.cpl

Bluetooth Transfer Wizard -

Enable Aero In Windows Vista Home Basic

This little hack will enable Aero on Vista Home basic (if u’ve got 70MB Video RAM) and it might even not enable Aero but enable Vista Standard View, which is similar to Aero but not Glass effect and will disable other animation…

1. Click on the Vista Start button, type regedit and press ENTER. You can also press CTRL + ESC or Windows key follow by typing regedit in the Vista Search box and press ENTER.If you’ve not turn off or tweaking Windows Vista User Access Control, you’ll be prompted for permission to continue. Just press Continue to proceed. 
2. Locate the HKEY_CURRENT_USER > Software > Microsoft > Windows > DWM registry key on the left panel of Windows Registry box.
3. On the right panel, search and double-click the Composition key and change the value to 1. Also, change the CompositionPolicy key value to 2.
4. Click on the Vista Start button, type servives.msc, and press ENTER key to bring up Windows Services box. Locate the Desktop Windows Manager Session Manager and double-click it. Click the Stop button follow by Start button to stop/start or restart the Desktop Windows Manager Session Manager service.Alternatively, you can open a elevated-privilege Command Prompt and type net stop uxsms follow by net start uxsms, which do the same thing!

Restart the System and you’re done.

Windows XP : Security Holes

Moving inside the box:

There are 2 security holes I found in Windows XP sp-2:

 1)      REPAIRING: When repairing the Windows XP, if we press Ctrl+F10 then the DOS prompt is popped up and you have the access (not administrator privilege) to the box.

2)      RECOVERY CONSOLE: I’ve used a lot of third party software to protect my system but the best way I found was to physically block access to my PC…

I started googling around for getting administrator access to XP box without a third party program but it turned out to be either very time consuming or not working for sp-2 and so I started looking for the answer on my own, when I ended up with a Windows 2000 boot-able cd from a friend.

The game:

Most of you might have used the recovery console of Windows XP which asks the Administrators Password before letting you use itself, but what if we boot a XP sp-2 machine with Windows 2000 cd and start the recovery console present in it???

VOLA!!!! THE PASSWORD IS NOT REQUIRED

Google Search Snytax

Hello everybody in today's world most used search engine is GOOGLE approximately everybody had used it. But very few know the exact syntax to search on Google . This post will make your search more easy and refined.


SYNTAX :

• [ intitle:]
• [ inurl: ]
• [ site: ]
• [ filetype: ]
• [ link: ]
• [ related: ]
• [ cache: ]
• [ intext: ]
• [ phonebook: ]

Windows OS Installation Lifecycle.

Hey friends today Windows have gone too too far in every case but the roots remain the same. Today also most of the user's prefer to use Windows XP due to its simplicity. So I decided to give you all an overview of this product.Do leave a comment in any case if like or if you dont.
Windows XP comes in a number of versions, including a Home version and a Professional version.Windows XP Home is configured for home users. Windows XP Professional, which is configured to work as a workstation client, is a somewhat more powerful configuration for business users. Throughout this book, I’ll point out any differences in usage between the Home and Professional versions.

While not the focus of this book, Windows also comes in a number of server versions named Windows .NET. Microsoft has planned several server product offerings, including Windows .NET Server

and Windows .NET Advanced Server. We don’t expect that there will be major changes in .NET’s use of the registry.

In general everything remains same for Windows Vista (all Versions), Windows 7 (all Versions).The registry is a tree-based hierarchical system that offers quick access to data stored in almost any format. Actually, the registry is a rather flexible database. Registry information comes from a number of sources:

◆ From installing Windows

◆ From booting Windows

◆ From applications, systems, and user interaction