Monday, January 18, 2016

Managing User Accounts and Parental Controls in windows 7

Introduction Managing User Accounts and Parental Controls in windows 7


With Windows 7, everyone who uses your computer can have their own user account. This allows each person to have his or her own settings, and it allows you to set up Parental Controls to limit the types of games and programs your children are able to use.

In this lesson, you will learn how to create new user accounts, change account settings, and set up Parental Controls for your children's accounts.

Setting up multiple user accounts

Why should you have multiple user accounts?

If you wanted to, you could have a single account on your computer that everyone could use. But having multiple accounts has some advantages. If each user has his or her own account, then each person will have his or her own desktop for organizing files and folders. Each person also will be able to choose a specific desktop background, along with other personalization features. In addition, parents will be able to set Parental Controls for each child's account.

Standard vs. administrator accounts

Before you start making new user accounts, it's important to understand the two types of accounts:

Standard: Standard accounts are the basic accounts you use for normal, everyday tasks. As a Standard user, you can do just about anything you would need to do, such as running software or personalizing your desktop. Also, Parental Controls can be placed on Standard accounts.
Administrator: Administrator accounts are special accounts that are used for making certain changes to system settings or managing other people's accounts. They have full access to every setting on the computer. Every computer will have at least one Administrator account.

As you can see, Administrator accounts are more powerful. But for the same reason, Standard accounts are safer, so they are generally better for everyday use. In fact, you can make Administrator-level changes while logged into a Standard account; you will just need to provide an Administrator password when making the changes.

To go to your user accounts:

  • Go to the Control Panel from the Start Menu.
  • Click Add or remove user accounts.



  • The Manage Accounts pane will appear. You will see all of the user accounts here, and you can add more accounts or manage existing ones.



To create a new account:

  • From the Manage Accounts pane, click Create a new account.
  • Type an account name.



  • Select Standard user or Administrator.
  • Click Create Account.



To create a password:

  • From the Manage Accounts pane, click the account name or picture.


                    




  • Click Create a password.


  • Type a password in the New password field, and retype it in the Confirm new password field.





  • If you want, you can type a password hint to help you remember your password.
  • Click Create password.
  • To go back to the Manage Accounts pane, click Manage another account.




Account passwords are case sensitive, which means capital and lowercase letters are treated as different characters. For example, aBc1 is not the same as abc1.



To change your account picture:

You can also change the picture for any account. This picture appears next to the account name and helps you easily identify the account.

  • From the Manage Accounts pane, click the account name or picture.
  • Click Change the picture.




  • Select a picture, or click Browse for more pictures to select one of your own.



  •  Click change the picture




Tuesday, January 12, 2016

Some useful information about mobile technology

GPS : Global Positioning System

AMOLED display : Active Matrix Organic Light Emitting Diode

CDMA : Code Division Multiple Access

HSDPA : High Speed Downlink Packet Access

DLNA : Digital Living Network Alliance

EDGE : Enhanced Data for Global Evolution

GB : Giga Byte

GPU : Graphics Processing Unit

IMEI : International Mobile Equipment Identity

IP : Internet Protocol

KB : Kilo Byte

MB : Mega Byte

KBPS : Kilo Bits Per Second

MBPS : Mega Bits Per Second

LCD : Liquid Crystal Display

Li-Ion Battery : Lithium Ion

LTE : Long Term Evolution

MIDI : Musical Instrument Digital Interface

MMS : Multimedia Messaging Service

MPEG : Motion Picture Experts Group

MP3 : Music Player ver3

NFC : Near Field Communication

OEM : Original Equipment Manufacturer

OLED : Organic Light Emitting Diode

OS : Operating System

OTA update : Over The Air

PUK Code : Pin UnlocK Code

QVGA : Quarter Video Graphics Array

RAM : Random Access Memory

ROM : Read Only Memory

RS-MMC : Reduced Size Multi Media Card

RSS : Rich Site Summary

SAR : Specific Absorption Rate

SMS : Short Messaging Service

TFT screen : Thin Film Transistor

UI : User Interface

USB : Universal Serial Bus

VGA camera : Video Graphics Array

VPN : Virtual Private Network

WAP : Wireless Application Protocol

WCDMA : Wideband Code Division Multiple Access

WMV : Windows Media Video.

Tuesday, January 5, 2016

What is intranet


An intranet is a private network that can only be accessed by authorized users. The prefix "intra" means "internal" and therefore implies an intranet is designed for internal communications. "Inter" (as in Internet) means "between" or "among." Since there is only one Internet, the word "Internet" is capitalized. Because many intranets exist around the world, the word "intranet" is lowercase.

Some intranets are limited to a specific local area network (LAN), while others can be accessed from remote locations over the Internet. Local intranets are generally the most secure since they can only be accessed from within the network. In order to access an intranet over a wide area network (WAN), you typically need to enter login credentials.

Intranets serve many different purposes, but their primary objective is to facilitate internal communication. For example, a business may create an intranet to allow employees to securely share messages and files with each other. It also provides a simple way for system administrators to broadcast messages and roll out updates to all workstations connected to the intranet.

Most intranet solutions provide a web-based interface for users to access. This interface provides information and tools for employees and team members. It may include calendars, project timelines, task lists, confidential files, and a messaging tool for communicating with other users. The intranet website is commonly called a portal and can be accessed using a custom intranet URL. If the intranet is limited to a local network, it will not respond to external requests.

Examples of intranet services include Microsoft SharePoint, Huddle, Igloo, and Jostle. While some services are open source and free of charge, most intranet solutions require a monthly fee. The cost is usually related to the number of users within the intranet.

What is Internet


The Internet, sometimes called simply "the Net," is a worldwide system of computer networks - a network of networks in which users at any one computer can, if they have permission, get information from any other computer (and sometimes talk directly to users at other computers). It was conceived by the Advanced Research Projects Agency (ARPA) of the U.S. government in 1969 and was first known as the ARPANet. The original aim was to create a network that would allow users of a research computer at one university to "talk to" research computers at other universities. A side benefit of ARPANet's design was that, because messages could be routed or rerouted in more than one direction, the network could continue to function even if parts of it were destroyed in the event of a military attack or other disaster.


Today, the Internet is a public, cooperative and self-sustaining facility accessible to hundreds of millions of people worldwide. Physically, the Internet uses a portion of the total resources of the currently existing public telecommunication networks. Technically, what distinguishes the Internet is its use of a set of protocols called TCP/IP (for Transmission Control Protocol/Internet Protocol). Two recent adaptations of Internet technology, the intranet and the extranet, also make use of the TCP/IP protocol.

For most Internet users, electronic mail (email) practically replaced the postal service for short written transactions. People communicate over the Internet in a number of other ways including  Internet Relay Chat (IRC), Internet telephony, instant messaging, video chat or social media.

The most widely used part of the Internet is the World Wide Web (often abbreviated "WWW" or called "the Web"). Its outstanding feature is hypertext, a method of instant cross-referencing. In most Web sites, certain words or phrases appear in text of a different color than the rest; often this text is also underlined. When you select one of these words or phrases, you will be transferred to the site or page that is relevant to this word or phrase. Sometimes there are buttons, images, or portions of images that are "clickable." If you move the pointer over a spot on a Web site and the pointer changes into a hand, this indicates that you can click and be transferred to another site.

Using the Web, you have access to billions of pages of information. Web browsing is done with a Web browser, the most popular of which are Chrome, Firefox and Internet Explorer. The appearance of a particular Web site may vary slightly depending on the browser you use. Also, later versions of a particular browser are able to render more "bells and whistles" such as animation, virtual reality, sound, and music files, than earlier versions.


The Internet has continued to grow and evolve over the years of its existence. IPv6, for example, was designed to anticipate enormous future expansion in the number of available IP addresses. In a related development, the Internet of Things (IoT) is the burgeoning environment in which almost any entity or object can be provided with a unique identifier and the ability to transfer data automatically over the Internet.

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