Android operating system

Every computer has an operating system and every operating system perform a variety of functions. Android in easy terms is capable operating systems that increase the features of cell-phone, mobile devices like PDA, notebooks, cellular phones, and tablet computers. This operating system has a bundle of features that meets the load of day to day wants all in one cell-phone. This operating system provides user interface which helps users to interact easily. “Operating system” is collection of programs that handle many of the technical details related to using computers. In many ways, an operating system is a most important type of computer program. Android is the best operating system. The first   Android was introduced on 5 November 2007with a stand built on Linux Kernel version 2.6. It provides flexibility to any degree and user-friendly.

In Today’s world Android is one of the most popular operating system used in cell phone. Android is cheaper and provide so many functions. The earliest Android phone was -The LG GW620. There has been new models exist. Android phones have a number of different benefits For instance, Android can run numerous applications at the same time (simultaneously), which improves the functionality of the phone and makes easier to multitasking. Many Android phone users informed that they are easier to handle, more flowing, and faster. Android allows you to download movies, TV shows, music, magazines, and books. It also provide inclusive library for image files, video files and audio files.

• By using Android keyboard you can access numbers, letters and special characters.
• It also provide faster data and web access
• Android provides social networking including twitter, Face book, as well as other social service.
• Android comes with various applications and high quality games with more impressive graphics. 
• It also provides a facility to capture sharp, clear and smooth images and video.

Because of such benefits android become most popular and it is the first choice of everyone.

The Benefits of using Smartphones

Smart phone is the best invention ever. A smart phone combines the A functioning of a PDA and a mobile phone. It is a device that lets you make phone calls. A Smart phone is a cell phone which includes the most advanced features which helps to make calls and sms. Most smart phones have the ability to shows photos, graphics, play games and video. It is also use to check and send  messages, mails, and surf the net. Modern Smart phone’s, such as the iPhone provides unlimited facilities. Modern Smart phone’s are smaller in size and cheaper in cost than earlier devices. This handheld device integrates mobile phone capabilities with the more common features of a handheld computer or PDA. Smart phone’s allow users to store information, e-mail, install programs, along with using a mobile phone in one device.

What's the difference between a Smart phone and a cell phone?

Unlike traditional cell phones, Smartphone’s let you choose how you want things done. You choose your applications, install them and configure them as you see fit. In contrast, regular cell phones offer the user very little configuration control.

Benefits of Smartphone

Flexible working - smart phone works flexibly. With a PDA, one can use their smart phone to keep notes,  edit  and modify your appointments, document and contacts.

Provides Superior functionality & Multimedia – Smart phone provides superior functionality. Smart phone offers a new way of marketing the product, MMS lets people  include music, animation and graphics.  It include a wide range of multimedia competence, like to watch videos, take pictures and play music.

Faster communication - Smart phone provides  the fast  way of communication. Net connectivity is easier and fast than earlier available mobiles phones. It makes it easier to access e-mail and information from the Net.

Pocket size power- Smart phone is small and easy to carry that one can carry it in his pocket. They are somewhat larger than the normal mobile phones, but this is to be expected as it is basically a ‘laptop in your pocket’.

Never out of reach – Smart phone will not only allow you to check for email but can enable to manage any email accounts like Gmail and rediffmail.

Very easy to handle- Smart phone is very handy. Smart phone is very popular today. It is not a regular cellular phone. It is really a really multi tasking phone. Smart phone has everything we have hoped for in a phone.  We all like this invention.

Internet Access - It have the ability to connect to the Internet using wireless technology. This is a benefit to users who may not want to carry a laptop. It’s very easy to carry the Smart phone.

VIRUS PROTECTION AND INTERNET SECURITY

In today’s fast going word computer become an important Part in every one’s life. While using computer there so many programs like computer viruses, worm, and other factors can affect your computer badly. A computer virus is a tiny software program that spreads from one computer to another computer and that interferes with computer operation. Are you worried that a computer virus will erase your personal files? it is possible for others to gain access to and control over your computer system. Anti virus is used to avoid, detect, and remove such types of computer viruses. This software can improve a computer's performance. New users may also have difficulty to understand the facts  that anti virus are presents with them.  Anti virus  naturally examines files when the computer's operating system creates, opens, and closes them; and when the files are e-mailed. In this way, a known virus can be detected immediately upon receipt.  Other free anti virus  are available.  All of them are not provide good and enough proper security to computers. Some free anti virus  does not come with advanced detection technologies and therefore, may fail to detect different variants of viruses. 

  

 Advantages of installing anti virus

1.Security from spam and  Viruses
The first advantage to installing anti virus  is that it will protect  you  from viruses like malware, bugs, spam and spyware. A virus not only destroys all of the valuable data but also it can make the computer completely useless by destroying processes.

2.Shielding Personal Information
An excellent anti virus will protect you while operating the Internet. Prevent hackers from unauthorized access of personal things like personal information, bank account info. and credit card info.etc.

3.Cost Savings
Some anti virus  are very costly. some very good options for those who wants something relatively non expensive or even free. There are so many  anti-virus programs which are free, very easily available and that will protects computer system.

4.User friendly

Anti virus programs are very user friendly and safe. It is very easy to handle for them who are handling the computer firstly. It is very easy to install in our computer.

Computer viruses and its various types

 virus is a tiny software program that spreads from one computer to another computer and that interferes with computer operation. The term "virus" is also commonly used, to refer to many different types of malware programs. A computer virus is a computer program that can copy itself and infect a computer with no permission  of the user.

How they are spread:               
•     A computer virus may damage or delete data on a computer, use an e-mail program to spread the virus to other computers.
•    Computer viruses are most easily spread by attachments in e-mail messages or by instant messaging messages.
•    Computer viruses can be hidden as attachments of funny images, photos, games, greeting cards, or audio and video files.
•     Computer viruses also spread by using downloads on the Internet.
•    Computer viruses can be hidden in pirated software or in other files or programs that you may download.
•    A virus can only spread from one computer to another when its host is taken to the uninfected computer, for instance by a user sending it over a network or the Internet, or by carrying it on a removable medium such as a floppy disk, CD, or USB drive.

Different Types of Computer Viruses

  A virus should never be understood as risk-free  on a computer system. Most general  types of  viruses are given below -

E-mail viruses :-
An e-mail virus dealing as an attachment to e-mail messages, and usually replicates itself by routinely mailing itself to dozens of people in the victim's e-mail address book. Some e-mail viruses are launch when you view the infected message in the preview page of your e-mail software

The Worms :-
A worm is a small piece of software that uses computer networks and security holes to replicate itself. A copy of the worm scans the network for another machine that has a specific security hole.

The Resident Virus:- 
The resident virus is a stable as it dwells in  RAM. It can destroy programs and files that are renamed, copied, closed, opened etc.  From there it can overcome and break off all the operations executed by the system.
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The Direct Action Viruses:-
The main aim of direct action virus is to reproduce and act  when it is executed. When a particular situation is met, this virus will go to  infect files in the folder or directory.

The Overwrite Viruses:- 
This kind of virus is noticed when the fact that it deletes the information enfold in the files, folders and directory that it corrupt. The best way to clean a folder and files infected by this virus is to destroy the file completely.

The Boot Sector Virus:-
The boot sector virus have an effect on  the boot sector of a hard disk or floppy disk. It is very harmful for our hard disk. The only way of avoiding this viruses is to make sure that floppy disks and hard disk  are write-protected and not at all start your computer with an unknown disk  and floppy in the disk drive.

The Macro Virus:- 
This virus infect folder and files that are created using particular programs or application that hold macros.

The Directory Virus:- 
This viruses change the paths that point out the location of a file. the directory virus once infected it becomes impossible to locate the original files.

The Polymorphic Virus:-
Polymorphic viruses encrypt or instruct themselves in a different way using different algorithms and encryption keys every time they infect a system.
 

File Infector Virus;-
This type of virus infects programs or executable files. When one of these programs is run, openly or not directly, the virus is activated, producing the damaging effects it is programmed to carry out.

Companion Viruses:-
Companion viruses can be considered as a type of file infector viruses like resident or direct action types. They are known as companion viruses because once they get into the system they go with the other files that already exist.

FAT Virus:-
The FAT is basically a chart which contains numbers that correspond to cluster addresses on a hard drive. FAT virus attacks the FAT section and may damage crucial information.  A FAT virus can be rather dangerous as it infects a critical part of the computer's operational process.  

Multipartite Virus:-
These viruses spread in multiple ways possible. It may vary in its action depending upon the operating system installed and the presence of certain files. 

Web Scripting Virus:-
Many web pages include difficult code in order to create an interesting and interactive content.

Types Of Software Updation

There are three main types of software updates you can perform.

Major System Updates

Major System Updates include Mac OS X Full Version Updates (10.3 to 10.4, 10.4 to 10.5, etc.) and QuickTime Full Version Updates (6.x to 7.x,) etc. These updates add and improve functionality to your computer but it may require more RAM, more disk space, and/or a faster processor than your current system has. by using this updates Your computer can perform better than the earlier.


Updates for Minor System

Updates for Minor System include Mac OS X point releases (10.4.9 to 10.4.10), Mac OS X Security Updates, QuickTime point releases (7.1.3 to 7.2), Java, Air Port, and related Apple components. There is almost all of them are available through the online and there is typically no cost for these updates.

Updates for Application

Updates for Application also include major new versions (iTunes 6.x to 7.x) and minor point releases (iTunes 7.4.1. to 7.4.2). As with System Updates, new versions typically introduce many new features and capabilities. And these are available with low cost on the internet.


Advantages of Online Software Updates

There are several companies that provide regular updates of their software and any user who is using the particular software will be able to download the information from the internet and then update the existing software. This is done because there are several advantages for the user. Some of the uses of the software updates are here.

1.    Protection from security problem - The main advantage is that the person who is updating the software will be able to prevent any security problems. There is a number of software that may have some bugs in them. This is the main reason for the software updates.  The online update protects the computer from this kind of problems.

2.    New features can be added -   The software updates will help to add the new features to the existing software, without the need to remove the older version and then updating or installing the newer one. Though there are times when some software needs to be removed before installing again, it happens only when a lot of information has changed. By using these types of software updates you can add new and extra feature.

3.    Protection from viruses- This update will protect the computer of the user from various viruses too. There are times when viruses can attack specific software to break the code. In these situations, the software updates are able to prevent such malicious attacks and save user data and other information.

What Are The Advantages & Disadvantages Of Software Updation

The Software updation means an improvement in software.  Many of the paid software release updates before they are actually ready for general public. Following are the various Advantages and Disadvantages of the software updation.



Advantages

1. Security: The foremost advantage is for reason of security. If we make any weak spot, there is a possibility the illegal hackers could (also known as crackers) may steal or damage data and programs. Each software provides tools for security and the user should understand the level of protection automatically.

2. Bug Fix: Second advantage is bug fix or fresh appearance of the software

Disadvantages

1. The main disadvantages are that you might get some new bugs, some of which could even stop you from using older data files. In some cases, software updates may actually be intended to stop a user from doing things that the user found helpful. For example, an early iTunes update stopped users from uploading content from their iPods in order for Apple to have better control of the content purchased from their iTunes store.

2. Another disadvantage of upgrading is that you may have to take time to re-learn portions of the software. Some items may have moved, and some tasks might be done in different ways.

3. A disadvantage is if the update has not been thoroughly tested, especially if there's an interaction with the software you might have running on your system.