No. You don't have to ever update it if you don't want to.
Yes very much so. Windows 7 was a big jump from windows vista. Windows usually has a good operating system every other time.
updating means to bring up a small or joint part of any technology (renovate it),but upgrading in all or many parts of it ,so brings to a new generation. Updating is basically patching the existing software. It might add some new features, but for the most part it is updating to newer, stable, secure code. Example: Windows 7 Updates, which are released every month, this does not give you Windows 8 or 10, it just patches the current operating system and installed components. Upgrading is installing a new version. This is equivalent to upgrading Windows 7 to 8 or 10. A whole new operating system is installed. Same rules apply to all software, not just operating systems.
A mummy operating system and a daddy operating system get married. They then decide to raise a new operating system - how is private between them. Every once in a while things go wrong - and you get Windows ME.
DOS
DirectX10 was released with the Windows95 GEM Service release 2, but not in the original WIndows95. Starting with Windows98, DirectX10 was released with the operating system and has been included with every operating system since.
No, about every operating system can handle MP3 files.
It's not the computer that has the software applications... It's the operating system, e.g. Windows XP, Vista.
Professional
Every operating system is unique to the person who is using it!
All of them! Who needs an operating system, right? Go ahead and delete every last file on your computer!
No, windows PE was never intended to be a full-time operating system. It provides only sufficient capability to perform certain installations. Therefor, Windows PE will not run every program that Windows 7 can.
Technically there is no differences between Windows and DOS. DOS is an acronym for Disk Operating System which every computer has to have to operate.