| A | B |
|---|
| Computer literacy | knowing how to use a computer |
| Information literacy | knowing how to find, analyze, and use information |
| Input Devices | Used to enter data into a computer |
| System Unit | contains electronic circuits that cause processing |
| RAM | Random Access Memory. It can be changed |
| CPU | Central Processing Unit |
| ROM | Read Only Memory. It cannot be changed |
| Byte | one character of storage |
| Kilobyte | over one thousand characters of storage |
| Megabyte | over one million stored characters |
| Gigabyte | over one billion stored characters |
| Arithmetic operations | numeric calculations such as addition, subtraction, multiplication, and division |
| Floppy Disk | small plastic disk that stores data in magnetic areas |
| Logical operations | comparisons of data to see if one value is greater than, equal to, or less than another. |
| Hard Disk | non-removable and store larger amounts of data than diskettes |
| CD-ROM | uses a low powered laser light to read and write data |
| DVD | digital video disk. It can store more than a CD-ROM |
| Modem | communication device used to connect to computers over telephone lines |
| Network interface card | used with cables to connect computers that are close together |
| Peripheral devices | any devices connected to the system unit |
| Information processing cycle | Four stages–Input,process,output,storage |
| Data | raw facts, including numbers, words, images, and sounds, given to a computer during the input operation. |
| Information | data that has been processed into a form that has meaning and is useful |
| Computer Users | data that has been processed into a form that has meaning and is useful |
| Internet | A global network of computers used to gather information, send messages, and obtain products and services |
| World Wide Web | A portion of the Internet made up of computer sites people can link to |
| Web site | Computer sites people can link to in order to access information |
| Web browser | computer program that allow users to view & interact with web sites with home computer |
| Microcomputer | A PC or small computer systems that have become widely used |
| Hand-held computer | small computers designed for a specific purpose like meter reading |
| Palmtop computer | Small computer designed to manage information like appointments, addresses, phone numbers |
| Pen computer | specialized portable computers that use a pen like device to enter data |
| PDA computer | (personal digital asst.) – hand-held device that allows sending fax, voice or data |
| Notebook computer | small general purpose computer that can be carried in a briefcase |
| Subnotebook | smaller version of a notebook |
| Laptop | a larger version of a notebook |
| Desktop computer | computer that comes in horizontal cases to fit on top of a desk |
| Tower computer | Computer that comes in vertical cases. More room inside to expand |
| Workstation | expensive high-end personal computer for graphics or complex calculations |
| Network computer | low cost microcomputers designed to work on a computer network |
| Server | Designed to support a network that allows users to share files, software, and hardware. |
| Minicomputer | More powerful than personal computers and support several users at one time |
| Mainframe computer | Large systems that can handle hundreds of users |
| Supercomputer | Most powerful and expensive category of computers |
| Connectivity | computer can communicate with another computer |
