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| Computer Program or Software |
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Definition
| A set of detailed instructions that tells it exactly what to do. |
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They are six primary components
• Input devices
• Processor
• Memory
• Output
• Storage devices
Communication devices |
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| Where do you find the Processor Memory & Storage devices? |
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Definition
| Housed in a box-like case called the system unit. |
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Definition
Any hardware component that allows you to enter data, programs, commands, and users responses into a computer.
• Keyboard
• Mouse
• Digital Camera
• Scanner
• Microphone |
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| An input device that contains keys you press to enter data into the computer. A desktop computer keyboard typically has 101 to 105 keys. |
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| Is a pointing device that fits comfortably under your hand. With a mouse you control the movement of the pointer, often called the mouse pointer, on the screen and make selections from the screen. |
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| Is a case that that contains electronic components of the computer used to process data. |
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| Sometimes called a system board, is the main circuit board of the system unit. This is where you attach extra components. |
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| Is also called the central processing unit(CPU), interprets and carries out the basic instructions that operate a computer. |
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Definition
| Interprets the instructions. |
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| Also called random access memory or RAM and this consists of electric components that temporarily 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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| Equals approximately one million character |
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| Equals approximately one billion memory locations. |
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| Usually stores one character such as the letter A. Therefore, 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. |
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| Such as ink- jet printers and laser printers, form characters by means other than striking a ribbon against paper. Examples include ink-jet and laser. A laser printer is a high-speed, high-quality nonimpact printer that employs copier-machine technology. It converts data from the computer in to a beam of light that is focused on a photo-conductor drum, forming the images to be printed. |
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| Forms character or graphics by using a nozzle that sprays tiny drops of ink onto the page. |
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| Is a packaged as a separate unit. |
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| Also is the LCD monitor and is the most popular type of flat panel monitor, and uses a liquid display crystal, similar to a digital watch, to produce images on the screen. |
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| The surface of the screen of either a CRT monitor or LCD monitor is composed of individual picture elements. |
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| Is used to store instructions, data, and information when they are not being used in memory. |
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| Use magnetic particles to store items such as data, instructions, and information on a disk's 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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| A narrow recording band that forms a full circle on the surface of the disk. |
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| The disk's storage locations consist of pie-shaped sections, which break the tracts into small arcs. |
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| Means you an remove the medium from one computer and carry it to another computer. |
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| Means you an remove the medium from one computer and carry it to another computer. |
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| Also called a hand disk drive, is a storage device that contains one or more inflexible, circular platters that magnetically store data, instructions, and information. |
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| When a read/write heads touches a platter, usually resulting in loss of data or sometimes the entire drive. |
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| Is 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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| A device that can read from and write on a floppy disk. Floppy disk drives are either built into the system unit or are external to the system unit and connected to the computer via a cable. |
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