Green coffee beans extract actually only contains about 10% of caffeine per its weight, meaning that in an average 200 mg dose there is 20 mg of caffeine. This is about half the amount of a can of soda!
CPU - This stands for the Central Processing Unit of the computer. This is like the computerâs brain. MAC - This is an abbreviation for Macintosh, which is a type of personal computer made by the Apple Computer company. OS - This is the Operating System of the computer. It is the main program that runs on a computer and begins automatically when the computer is turned on.
Community Q&A. An operating system (OS) is software that manages the interaction between hardware resources and the programs or applications you use on a computer. Most PCs have a version of the Windows operating system on them but Macintosh, Linux and UNIX are other popular operating systems. Besides learning the name of your operating system, such as whether you have Windows 7, you can find other useful information about your system.