Basically it has to do with the size of the chunks of information handled by the CPU (the computer's processor). The 64-bit chunks are obviously twice the size of 32-bit chunks and a CPU on a 64-bit system can work faster.
Windows Vista is the operating systems that came between Windows XP and Windows 7. As of 2013, the newest version of windows operating system is Windows 8.
Windows 9!
Windows is a general purpose operating system and Novell NetWare is a network operating system
Open-source is a development model. Windows is an operating system.
unix is a multiuser operating system but widows is a single user operating system.
Windows 8 and 8.1 are the version of Windows NT, released by Microsoft and both are slightly different from each other. The main difference between 8 and 8.1 is that Windows 8.1 has more apps as comparison to Windows 8 such as integration of OneDrive, along with it's under interface tweaks and the addition of expanded tutorials for operating the Windows 8 interface.
Windows is an operating system whereas Java is a programming language. They are entirely different.
Android in general can be referred to the company under Google that develops the operating system and devices. Android KitKat is the codename for one of many versions of Android's operating system, version 4.4 in this case.
Windows is developing windows 7
Microsoft Windows 7
Windows 7 is the latest Windows Operating System
Windows 8 is the most current windows client operating system.