No, it is not used on all computers it is only used on the computers that are specified on the website you download it from or if you buy it and then download it from your CD to your computer.
Almost all computers, with maybe a few exceptions, have Windows 7 pre-installed on them. That is, only if it is a Windows computer, as Apple computers don't have Windows OS.
Tkinter comes pre-installed on all macs.
"Pre-" is the prefix for "install."
Pre-assembled computers are factory made, usually by a known company like Dell, and come with the factory defaults for hardware and OS (Operating System). A computer would be custom built if you bought all of the parts separate and assembled the computer from scrap.
No, Chess Titans is a free game that comes pre-installed on all computers that have Windows 7
All of the steam games are virtual disks that you pre download all the files and after that you can install the game the games are free but many good once they cost money. To save time you can pre download game over the night and once you have paid for it. It will allow you to install the game files onto the computer.
You don't, it comes pre-installed.
it is when computers come with pre-installed programs that slow down your computer.
Microsoft Office is not supplied with Apple computers but can be purchased from all leading software retailers.
A garden tub can be installed in a pre-existing bathroom. You have to remove the pre-existing bathtub and install the garden tub.
Microsoft Security Essentials generally comes pre-installed with Windows. If you don't have it you can install it on the Microsoft site.
Linux is an operating system for the computer. You can purchase computers that already have Linux pre-installed on the computer. Select Dell computers come equipped with Linux.