RAIT IT (Unofficial)

Windows 7 is the Microsoft Windows operating system released commercially in October 2009. In development, Windows 7 was known by the code names "Blackcomb" and "Vienna. 

Windows 7 is built on the Vista kernel. The OS is widely available in three retail editions: Windows 7 Home Premium, Professional and Ultimate. According to Microsoft, Windows 7 requires 1 GHz processor, 1 GB (32-bit) / 2 GB of RAM (64-bit), 16 GB (32-bit) / 20 GB of available disk space (64-bit) and a DirectX 9 graphics device or higher driver. 

Windows 7 features:

• XP mode - Allows older applications designed for Windows XP to use a virtualized version of the XP operating system.

• BitLocker To Go - Extends on-disk encryption and key management techniques to portable storage devices.

• Virtual hard disk support - Allows you to mount a virtual hard disk (VHD) and interact with it as if it were a physical drive.

• Jumplists - Organize the recently used files as well as web pages.

• Advancements to Calculator, WordPad & supports advanced touch and handwriting recognition.

Drawbacks:

• Major drawback of the windows 7 is the hardware configuration. It needs RAM capacity of at least 1 GB.

• Windows 7 cannot be easily upgraded from windows XP. 

• Expensive than the previous Microsoft operating systems.

• Features like Windows Ultimate Extras, InkBall, Windows Live Essentials included in Vista were removed in Windows 7.

Ubuntu is an open source Debian-based Linux distribution, sponsored by Canonical Ltd. The operating system was intended primarily for personal computers (PCs) but it can also be used on servers. The word "ubuntu" is from the African Zulu language and translates as "humanity to others." 

The primary version of Ubuntu employs GNOME (GNU Network Object Model Environment), GUI and set of desktop applications for Linux. GNOME is intended to make Linux easy to use for non-programmers and is similar to the Windows desktop interface. 

Several variants of Ubuntu are available in addition to the regular distribution:

• Ubuntu Server Edition

• Ubuntu Studio, for multimedia applications

• Edubuntu, for educational purpose

• Kubuntu, a version that employs KDE (Kool Desktop Environment) instead of GNOME

• Xubuntu, for computers with limited processing power

• JeOS (just enough OS), a lightweight version for virtual appliances.

Canonical Ltd. adds new releases of Ubuntu at six-month intervals along with a minimum 18-month security-update commitment for each release. 

Ubuntu Features:

• Ubuntu is one of the most secured operating system.

• It is an open source Linux operating system.

• It defines the highest level of security as compared other operating system.

• It is available free of cost.

• Minimum requirements: 1GHz 32-bit processor (above Pentium 4), 512MB RAM, 5GB free space on hard drive, Graphic card with 800 x 600 resolution

Drawbacks:

• Hardware compatibility. Most PC hardware is made with the expectation that it will be used in a Windows machine. So, getting some hardware to work can be difficult.

• Specific software. Though Ubuntu has number of free applications and software available, but most of the applications are not found for Linux use.

• It is not possible to play the modern games in Ubuntu OS.

• The forum support for Ubuntu is really very poor. It takes weeks and even months to get our query solved.

• The installation of Ubuntu is one of the major problems. The drivers support is also absent in most of the cases as compared other OS.