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Ch 11
Sections 1-4
| Question | Answer |
|---|---|
| A machine that accepts data (input), processes it into useful information (output), and stores it away (in a secondary storage device) for safekeeping or later use. | Computer |
| Symbols that represent facts, objects, or ideas; information that is processed by a computer. Has little meaning until it is organized into informationComes in several forms: Text, number, graphic, audio, photographic, animation and video | Data |
| Data entered into a computer | Input |
| A device you use to enter data into your computer; such as a keyboard, mouse, joystick, modem, scanner, or microphone. | Input Device |
| The information from a computer after it processes the data; it’s the result | Output |
| The device the computer uses to communicate with you; such as a monitor, printer, or speakers. | Output Device |
| Files that can be read, but not written to or modified | Read Only |
| To direct a light-sensitive device over a surface in order to convert an image into digital or electronic form for further storage, retrieval, and transmission | Scan |
| The area of the computer or any other device or medium used to hold data on a permanent basis when it is not immediately needed for processing. | Storage |
| The number system that uses only two numbers, 0 and 1 | Binary |
| Written instructions in a computing language. Combinations of bits and bytes. | Code |
| Using bits and bytes in different combinations to represent a code | Programming |
| A person who writes codes that create computer programs | Programmer |
| The smallest unit of information on a machine; The basic unit of information in all electronic computers. | Bit |
| a group of 8 bits; each one can represent one of 256 characters (numbers, letters, punctuation, or other information) | Byte |
| 1024 bytes | KB (kilobyte) |
| 1,024,000 bytes; approximately 1 million bytes | MB (megabyte) |
| 1,024,000,000 bytes; approximately 1 billion bytes | GB (gigabyte) |
| Provides a complete circuit on a tiny piece of semiconductor. | Integrated Circuit (IC) |
| One of the most important inventions of the twentieth century. | Integrated Circuit (IC) |
| Often called a "chip" | Integrated Circuit (IC) |
| Computers are built using many of these | Integrated Circuit (IC) |
| Circuit in which information is coded into a series of 0s and 1s | Digital Circuits |
| Uses only 0s and 1s; each 0 or 1 is called a bit. | Digital Circuits |
| A common measure of data speed for computer modems and transmission carriers. initials are bps | Bits Per Second |
| The processing chip that is the "brains" of a computer. | CPU (Central Processing Unit) |
| The name for the electronic holding place for instructions and data that a computer's microprocessor can reach quickly. | Memory |
| Built-in temporary storage (RAM)(ROM) that the CPU uses for processing data and instructions; designed to be directly accessed by the CPU; includes main memory and read-only memory | Primary Storage |
| Holds data on a permanent basis when it is not immediately needed for processing; not directly accessible to the processor; Common types are diskettes, hard drives, and tapes | Secondary Storage |
| Holds digital information, can only be written to once | CD-R or CD-ROM (Compact Disc Read Only Memory) |
| Reads programs and converts each programs instruction into actions. | CPU (Central Processing Unit) |
| Also called an Integrated Circuit (IC); provides a complete circuit on a tiny piece of semiconductor. | A Chip |
| A group of microchips designed to work as a unit in performing one or more related functions. | A Chipset |
| A plastic disc containing digital information encoded as a pattern of pits | A CD (Compact Disc) |
| The common word used for the Central Processing Unit. The processing chip that is the "brains" of a computer. | CPU |
| A personal computer in a form intended for regular use at a single location, as opposed to a mobile laptop or portable | Desktop Computer |
| A spinning platter made of magnetic or optically etched material on which data can be stored. | A Disk |
| The machinery that reads and writes the data to/from a disk | Disk Drive |
| A square rigid disk which holds data | Floppy Disk |
| A computer that fits into a pocket, runs on batteries, and is used while holding the unit in your hand. | Handheld |
| A large capacity storage device made of multiple disks housed in a rigid case. The primary device that a computer uses to store digitally encoded permanent information. | Hard Drive |
| Most computers come with one of these, it’s usually called drive C and is located inside the computer case. | Hard Drive |
| The physical components of a computer system that you can see or touch; CPU, Monitor, Hard Drive, Keyboard, Mouse, etc. | Hardware |
| A printer that places ink on the paper by spraying droplets through tiny nozzles. | Inkjet Printer |
| A printer that uses a laser beam to reproduce images or text on a photosensitive drum to which a black powder called toner, made of iron grains and plastic resin, is applied. | Laser Printer |
| A large, powerful computer able to manage many simultaneous tasks and communicate with many connected terminals; used by large, complex organizations (such as banks and supermarkets) | Mainframe |
| An arrangement of letters, numbers, and special function keys that act as the primary input device to the computer. | Keyboard |
| A portable, compact computer that can run on an electrical wall outlet or a battery unit. | Laptop |
| A small portable computer which is relatively inexpensive and which is designed for a single user. | Microcomputer |
| TV-like screen used to display information; Display device that forms an image by converting electrical signals from the computer into points of colored light on the screen. | Monitor |
| The main circuit board inside a computer; contains the computer's basic circuitry and components, such as the CPU chip, memory chips, expansion slots, and other electronic components. | Motherboard |
| An input device that allows the user to manipulate objects on the screen by moving the cursor | Mouse |
| Acronym for personal computer; used for word processing, accounting, record keeping, and many other tasks in businesses and homes. | PC |
| External devices used to expand the computer’s input, output and storage capabilities. Example: printers, scanner, cameras | Peripheral devices |
| Also known as a PC, desktop computer, or microcomputer, is used for word processing, accounting, record keeping, and many other tasks in businesses and homes. | Personal Computer |
| Changes the electricity from the wall outlet into electricity the computer can use. | Power Supply |
| An output device that produces text or graphical images on paper. | Printer |
| Electronic memory inside a computer that temporarily stores information. | RAM (Random Access Memory) |
| This type of memory forgets everything you told it when you turn off the computer | RAM (Random Access Memory) |
| The amount of this type of memory in a computer determines the number of programs you can run at once. | RAM (Random Access Memory) |
| A type of memory chip that does not lose information, even when the power is turned off. | ROM (Read Only Memory) |
| Once data is programmed into this memory chip, its contents cannot be altered. | ROM (Read Only Memory) |
| Cell phones and personal digital assistants are likely to have software in this type of memory | ROM (Read Only Memory) |
| These memory chips are used to store information for starting up your computer. | ROM (Read Only Memory) |
| An input device that can transfer data from the printed page or photo directly into the computer | Scanner |
| An expansion card that processes the input and output of audio signals | Audio Card (also called Sound Card) |
| A small wafer of silicon forming the base on which an integrated circuit is laid out | Silicon Chips |
| Any computer that has a far greater processing power than others of its day | Supercomputer |
| Instructions, or programs, that tell a computer what to do. | Software |
| Without this, a computer is like an airplane without a pilot. There are two types of this: one for the operating system and one for the applications. | Software |
| Controls the computer and its components | System Software (Operating System Software) |
| Allows you to carry out certain activities, such as word processing, games, and spreadsheets. | Application Software |
| Two of the most popular types of System Software | Windows and Mac |
| Gives the computer instructions for carrying out a specific task. | Application Software |
| Microsoft Word, Excel, Powerpoint, Access are examples of this | Application Software |
| A collection of related data; Knowledge about a topic | Information |
| Personal computer from Apple Inc. | Macintosh |
| The most common operating system for PC’s | Microsoft Windows |
| Microsoft Windows is an example of this | System Software (Operating System Software) |
| Set of detailed, step-by-step instructions that tell a computer how to solve a problem or carry out a task. | Program |