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| computer program or software |
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Definition
| A set of detailed instructions that tell the computer what to do. |
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| There are six primary components:nput devices, the processer (control unit and arithmetic/ logic unit), memory, output devices, storage devices, and communications devices. |
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| Where do you find the processer, storage and memory devices? |
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| In a box like case called the system unit. |
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| Any hardware component that allows you to enter data, programs, commands, and user responses into a computer. Some examples are keyboard, mouse, digital camera, scanner, microphone, and web cam. |
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| Examples of handheld computers |
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| Smart phones, PDA's, and tablet pc's |
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| A mall metal or plastic device that looks like a pen, but use pressure instead of ink to write draw or make selections. |
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| A pointing device that fits comfortably under the palm of your hand. |
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| A case that contain electronic components of the computer used to process data. |
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| The main circuit board of the system unit. This is where you attach extra components such as processor, memory, and expansion slots. |
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| An input device that contains keys you press to enter data into the computer. A computer keyboard typically has from 101-105 keys. |
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| An electronic device that operates under the control of instructions stored in it's own memory, that can accept data (input), process the data according to specified rules (process) ,produce results (output), and store results for future use( storage). |
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| Output device that projects what goes on the screen like web pages . |
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| An output device that is used to put documents on paper. |
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| An input device that is used to take a picture and download it to your computer. |
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| A communications device that make receiving an internet signal possible. |
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| An output device that is used for entertainment. |
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| An input device that takes pictures. |
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| A storage device that holds information. |
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| An input device that records sounds and puts them in the computer |
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| A storage device that holds the main memory for the computer. |
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| A storage device that plays compact discs and movies. |
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| A input device that makes videos and takes pictures. |
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Term
| Information processing cycle |
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Definition
| The four basic computer operations: input, process, output, and storage |
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Definition
The memory of the computer or RAM ( random access memory ) consists
of electronic components that temp. store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processed data
(information ). |
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| ( k or kb) equals approximately 1000 memory location and one megabyte ( mb ) equals approximately on million memory locations. One gigabyte ( gb ) equals approximately one billion memory locations. |
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| Or byte usually stores one character such as the letter A. for example, a computer with 512 MB of memory can store approximately 512 million characters. |
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| Prints by striking an inked ribbon against the paper, like the dot-matrix printers. |
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| Print buy means other then striking a ribbon on paper, others include ink jet and laser. |
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| Form characters or graphics that sprays tiny drops of ink onto the page |
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| A high speed, high quality nonimpact printer that employs copier machine tech. it converts data from the computer into a beam of light that is focused on a photo-conductor drum, forming the images to be printed. |
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| An output device that visually conveys text, graphics, and video information. |
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| A display device that is packaged as a separate unit. |
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| The most popular type of monitor, it uses a liquid display crystal, similar to the digital watch. |
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| (cathode ray tube) the surface of the screen are made up of pixels. |
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| Individual picture element. 300 ppi while printing, 72 for web design. |
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| Used to store instructions, data, and information when they are not being used in memory. |
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| Magnetic disks used magnetic particles to store items such as data, instructions, and information on a disks surface |
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| The process of dividing the disk into tracks and sectors, so the computer can locate the data, instructions, and information on the disk. |
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| Pie-shaped sections, which break the tracks into small arcs. |
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| A narrow recording band that forms a full circle on the surface of the disk. |
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| A storage device that contains one or more inflexible, circular patterns that magnetically store data, instructions, and information. |
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| When a read/write head touches a platter, usually resulting in a loss of data or sometimes the entire drive. |
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| A duplicate of a file, program, or disk that you can use in case the original is lost, damaged, or destroyed. |
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| An inexpensive portable storage medium. The most widely used floppy disk is 3.5 inches wide and typically can store up to 1.44 megabytes of data, or 1,474,560. they are also called diskettes. |
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