| A | B |
|---|
| personal computer (PC) | A computer used by one person at a time. Examples are desktops, laptops, & MP3 players also called microcomputers. |
| central processing unit (CPU) | A microprocessor, or tiny computer chip, that receives and carries out all the instructions given to a computer. Known as the "brain" of a computer. |
| bit | The smallest unit of computerized data always either a 1 or a 0. |
| byte | Equal to 8 bits. The building block for all information that flows through a computer. |
| hardware | The collection of physical pieces, or components, that make up a computer. |
| input | Information that is entered into a computer. |
| output | Information that a computer produces and delivers back to the user. |
| read-only memory (ROM) | Memory that permanently stores data and that cannot be erased or changed. Holds your computer's start up instructions. |
| random-access memory (RAM) | Temporary memory that a computer uses to store data and process information while working in a program. It is erased when the computer is turned off. |
| storage device | Computer equipment used to store data. Examples of storage devices are hard drive, network server, floppy disk, CD, DVD, and USB flash drive. |
| software | A set of instructions, also called a program or application, that tells a computer how to perform tasks. Types of software include Web browsers, email, word processing, presentation, & spreadsheet. |
| operating system (OS) | Software that controls all the other software programs and allows your hardware devices to work properly. Types include Microsoft Windows, Mac, Linux, & handheld systems used in MP3s & cell phones. |
| network | A group of computers connected together, often through a central server, using telephone lines, cables, satellite links, radio, and/or other communication devices. |
| computer | An electronic device that processes data. |
| ROM | Read only memory |
| RAM | Random access memory |
