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.
An operating system or OS is a software on the hard drive that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer and software programs would be useless. The picture to the right is an example of Microsoft Windows XP, a popular operating system and what the box may look like if you were to purchase it from a local retail store. Operating System types. As computers have progressed and developed, so have the operating systems. Below is a basic list of the types of operating systems and a few examples of operating systems that fall into each of the types. Many computer operating systems will fall into more than one of the below types. GUI-Short for Graphical User Interface, a GUI operating system contains graphics and icons and is commonly navigated by using a computer mouse. See the GUI definition for a complete definition.