Thursday 23 May 2013

Windows vs Linux Comparison


The following table contains a comparison between the operating systems Windows and Linux.
Topic
Linux
Windows
Price
The majority of Linux variants are available for free or at a much lower price than Microsoft Windows.
Microsoft Windows can run between $50.00(£33.00ish) - $150.00(£99.00) US dollars per each license copy.
Ease
Although the majority Linux variants have improved dramatically in ease of use, Windows is still much easier to use for new computer users.
Microsoft has made several advancements and changes that have made it a much easier to use operating system, and although arguably it may not be the easiest operating system, it is still Easier than Linux.
Reliability
The majority of Linux variants and versions are notoriously reliable and can often run for months and years without needing to be rebooted.
Although Microsoft Windows has made great improvements in reliability over the last few versions of Windows, it still cannot match the reliability of Linux.
Software
Linux has a large variety of available software programs, utilities, and games. However, Windows has a much larger selection of available software.
Because of the large amount of Microsoft Windows users, there is a much larger selection of available software programs, utilities, and games for Windows.
Software Cost
Many of the available software programs, utilities, and games available on Linux are freeware or open source. Even such complex programs such as Gimp, OpenOffice, StarOffice, and wine are available for free or at a low cost.
Although Windows does have software programs, utilities, and games for free, the majority of the programs will cost anywhere between $20.00(£13.00ish) - $200.00(£132.00)+ US dollars per copy.
Hardware
Linux companies and hardware manufacturers have made great advancements in hardware support for Linux and today Linux will support most hardware devices. However, many companies still do not offer drivers or support for their hardware in Linux.
Because of the amount of Microsoft Windows users and the broader driver support, Windows has a much larger support for hardware devices and a good majority of hardware manufacturers will support their products in Microsoft Windows.
Security
Linux is and has always been a very secure operating system. Although it still can be attacked when compared to Windows, it’s much more secure.
Although Microsoft has made great improvements over the years with security on their operating system, their operating system continues to be the most vulnerable to viruses and other attacks.
Open Source
Many of the Linux variants and many Linux programs are open source and enable users to customize or modify the code however they wish to.
Microsoft Windows is not open source and the majority of Windows programs are not open source.
Support
Although it may be more difficult to find users familiar with all Linux variants, there are vast amounts of available online documentation and help, available books, and support available for Linux.
Microsoft Windows includes its own help section, has vast amount of available online documentation and help, as well as books on each of the versions of Windows.

Friday 3 May 2013

Software Utilities/Utility Software


 
Utility software (program, tool, etc.) is any software that performs some specific task that is secondary to the main purpose of using the computer but is not essential to the operation of the computer (system software).


Many utilities could be considered as part of the system software, which can in turn be considered part of the operating system.

Software Utility
Example(s)
Purpose
How it improves computer performance
Security
AVG Anti-Virus, McCafee Anti-Virus, Norton Anti-Virus, Spybot: Search and Destroy
A security utility program is a computer program that is designed to protect your computer against harmful things. Common activities of security programs are; Removing viruses, rootkits, spyware and Trojans etc. Offer a firewall to deny access from incoming connections from the internet. Create backups, and restore your system if something dangerous were happening to it.
Prevents the infection of the system allowing the computer to function at optimum efficiency whilst protecting precious information that may be stored on the computer.
 
Firewall
 
Almost all operating systems come with in-built basic firewalls however independent security software will have more complex/higher
grade firewalls.
 
Controls the incoming and outgoing network traffic by analysing the data packets and determining whether it should be allowed through or not, based on a predetermined rule set
 
Stops harmful data before it even enters the system therefore preventing infection.
 
Clean-up Tools
 
Windows Disk Cleanup
 
Clean-up tools find files that are unnecessary to computer operation, or take up considerable amounts of space. They also help the user to decide what to delete when their hard disk is full by prioritising data by usefulness and suggests which files to delete.
 
Frees-up data storage space allowing the user more room for newer data. Also ‘unclogs’ the storage device which allows the system to access the information more efficiently.
 
Defragmentation
 
Defraggler
 
Physically organises the contents of the mass storage device used to store files into the smallest number of connecting regions (fragments). It also attempts to create larger regions of free space using compaction to impede the return of fragmentation. Some defragmentation utilities try to keep smaller files within a single directory together, as they are often accessed in sequence.
 
Takes fragmented data and realigns it so the computer can access that data quicker rather than accessing multiple data fragments.