Introduction to Computers (iCEV) Latest Update Graded A+

Introduction to Computers (iCEV) Latest Update Graded A+ Personal Computer (PC) computer designed for general use by a single person Light-Emitting Diode (LED) semiconductor light source used in various applications; used to make optical mouses and displays. Touch Pad computer pointing device that uses tactile sensor to detect a user's finger movement Liquid Crystal Display (LCD) thin, light electronic display which employs the light modulating properties of liquid crystals Universal Serial Bus (USB) connector interface designed to connect computer and peripheral devices, such as printers, mouses, keyboards, and external hard drives Motherboard main circuit board inside personal computers which holds the majority of computer components Central Processing Unit (CPU) microprocessor which calculates all the data going through a personal computer Clock Rate common measurement of CPU speed; tells how fast the CPU can process data Megahertz (MHz) unit of measurement of CPU clock rate; equals one million cycles per second Gigahertz (GHz) unit of measurement of CPU clock rate; equals one billion cycles per second. Random Access Memory (RAM) type of computer memory that temporarily stores computer information Binary Digit (Bit) smallest unit of computer storage capacity Read-Only Memory (ROM) type of computer memory that stores the Basic Input/Output System (BIOS); and cannot be changed Basic Input/Output System (BIOS) built-in program which initializes computer hardware and launches the operating system when the computer starts Compact Disc Read-Only Memory (CD-ROM) compact disc storage in which data can only be accessed, not modified Digital Video Disc Read-Only Memory (DVD-ROM) high capacity optical disc storage, in which data can only be read, not written Driver computer program allowing the computer to communicate with a hardware device Power Supply A device that provides power to a computer. Hard Drive main storage device of a computer; commonly referred as an internal device and used to permanently store data External Hard Drive removable hard drive