BitLocker and 35 Languages
The difference between Windows 7 Professional and Ultimate is basically two features: BitLocker and 35 Languages.
BitLocker is an encryption software that can be used to encrypt all of the data on your hard drive (within Windows). What is encryption? Basically, it's method of security in which you make files, folders, and data unreadable; sort of like turning it into a code. For example, the sentence "What's up, how are you doing?" may look like this encrypted "2#N#t(N$)#@)#%(#*." Why would you want to do this? For security purposes. If your data was ever to get hacked or stolen, the thief/hacker would not be able to use the data.
Are there other programs like BitLocker? Absolutely. There are several different encryption programs out there. However, because BitLocker is built into Windows 7 Ultimate, it is likely to be more efficient and work better with Windows. You should never run into any compatibility issues with BitLocker.
The difference between Windows 7 Professional and Ultimate as far as the languages is quite obvious. Windows 7 Ultimate allows you to easily switch between 35 different languages. Is this a useful tool for the majority of people? Not at all. This language switching feature of Windows 7 Ultimate is mainly meant for web developers, software testers, and other specialists who must test software in different languages.There is a good chance that you will never have a need for this feature.