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C2 Vocabulary 0308
Question | Answer |
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Central Processing Unit (CPU) | Where the processing of the information occurs in a computer. Also referred to as the processor. |
Arithmetic logic unit (ALU) | The sector of the CPU that performs the mathematical calculations. |
bit | A binary character (a zero or one). The smallest unit of binary information. |
Input devices | Allow the input of data into the computer. Examples include keyboards, mice, scanners, graphic tablets, microphones, digital cameras (still and video), Web cameras, electronic whiteboards, PDAs, "clickers," and cell phones. |
Scanner | An input device that is connected to the computer through a port connection, and that allows the conversion of a printed page (which is a type of analog data) of text or graphics to digital format. |
Output devices | Produce data after it has been processed in hard copy (paper for permanent media) or soft copy (displayed on the screen or nonpermanent means). Categories of output include text documents, graphics, or multimedia. Examples: monitor, speakers, etc. |
Portable media players | portable devices that store and play audio such as music or podcasts and/or audio and video. |
Internal storage | offered within the computer by way of a computer hard disk drive, or hard drive. |
Firewire (IEEE 1394) ports | provide fast connection to transfer large amounts of data quickly. |
Application software | Allows computer to carry out specific functions, such as word processing, creation of databases and spreadsheets, and so on. |
PAC Mate | PDA designed for blind or low-vision users. |
USB drives | Also known as pen, flash, or jump drives. Provide great flexibility in mobile storage devices. These small devices are plugged into computer USB ports, and are not platform-specific. |
Storage devices | Allow storage of data for later use. Include external and internal storage options. |
Control unit | Retrieves the instructions and sends command signals to the rest of the computer system to tell them what to do. |
Memory unit | Allows storage of information, is internal to the computer, and is divided into two types of memory: RAM (random access memory) and ROM (read-only memory). |