It's called Operating System. Windows Vista, Windows XP, Macintosh, Linux, etc. are called Operating Systems.
To remove the background of a video, you can use video editing software with a feature called "chroma keying" or "green screen." This allows you to select a specific color in the background and replace it with a different image or video.
Application Software
it's called device driver software commonly called a driver
hard-disk loading
BIOS stands for Basic Input/output System. It is software that is built into computers. A BIOS that can be reprogrammed using software is called EPROM.
There's a great company called ABCD Computers Mobile who can remove software off computers in Las Vegas.
zombie
Midi
I think that the code that computers use to interchange information is called the ASCII code.
Gateway
Network.
You need certain software called DreamScene.