system vocabulary

1.central pricessing-the cpu is responsible for performing all of the arithmetic and logical intructions that the computercan do.



2.expasion slots-connection that let you install expansion board(also called adapter cards) circuit board that allow you to attach additional devices to you compoter system.



3.flash memory-for exaple, sony,s memory stick holds up to 128 MB of data on a decive about the size of stick of chewing gum.



4.graphical user interface-the GUI lest users point and click on recognizable, intuitive, and consistent objects eliminating the need to memorize complex cpmmands and syntax.



5.hard drive-is the storange decive at the heart of most computer systems.



6.hardware-encompasses all the physical components of a computer.



7.input decice-are external to the system unit and are attached to it using specific connectors and poyts.



8.linux-is apowerful operating for PCs based on Unix.



9.macOs-mac users were the first to rely on the mouse and to depend on WYSIWYG (what you see is what you get) scren fonts and graphics.



10.mainframe-perform mutiple tasks for many users simultaneously-usually for large corporations or organizations.



11.minicomputer-smaller mutiuser systems calle minicomputer were common in the 1970s and 1980s.

12.motherboard-residing on the motherboard is the central processing unit (CPU).

13.operanting system(OS)-yhe software program that oversees and controls everything that happens while your computer is turned on.

14.output decive-most computer systems have at least three types of output decives-a monitor, a printer, and a speaker.

15.platform-application software is designed for specific platforms.

16.professional workstation-the meets the needs of users requiring more computing power that a personal computer yet lees than a minicomputer.

17.random access memory(RAM)-chips store data only temporaly; all information is erased when the computer is turned off.

18.read-only memory(ROM)-chips have instructions and data built into them.

19.supercomputer-meet this need by processing trillions of calculations per second.

20.syntax-in recent years, several user-friendly graphical user interfaces have been developed for unix, which has increased its popularity in personal computer systems.

21.system sofrware-includes the operating system and utility programs that help to operate and maintain your computer's data management tasks-usually automatically without any action on your part.

22.system unit-is the case that houses the computer's internal processing circuitry-including the motherboard, disk drives, power supply,plugin boards.

23.user interface-the way in which the user interacts with the computer.

24.unity program-the other part of the system software perform 'behind the scenes' duties that areimportant but not essential to the basic operation of the system.

25.virus-are small pieces of unauthorized program code written to invade hard drives.

26.windowsin 1985, microsoft corporation introduced its own graphical user interface called windows