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| A computer is an electronic device, operating under the control of instructions stored in its own memory, that can accept data (input), process the data according to specified rules (process), Produce results (output), and store the results (storage) for future use. |
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| A printer, portable media player, and the monitor. Are all output devices. |
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| A PC video camera, mouse, keyboard, microphone, scanner, car reader/writer, and digital camera are all input devices. |
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| A CD/DVD drive, hard disk drive, System unit, external hard disk, and a USB flash drive |
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| Other Devices (Communications, processor, memory) |
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Definition
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| What are the parts of the information cycle? |
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| Data, Information, Computer users, end users, and users. |
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| Data is a collection of unprocessed items. |
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| Information conveys meaning and is useful to one or more people. |
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| What can people who use the computer directly be known as? |
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| Computer users, end users, and users. |
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| Computer program or software |
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Definition
| A set detailed of instructions that tells the computer exactly what to do. |
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Definition
There are six primary components
Input Devices
Processor (Control unit, Arithmetic Logic Unit)
Output devices
Storage devices
Communications devices |
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| Where do you find the processor, memory, and storage devices? |
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Definition
| In system unit (box like- case) |
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Definition
Any hardware devices that allows you to enter data, programs, etc.
Keyboard
Mouse
digital camera
webcam
microphone
scanner |
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Definition
| An input device that contains keys you press to enter data into the computer. |
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| Examples of handheld computers |
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Definition
| Pda (personal digital assistant), tablet pc, and smart phone. |
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Definition
| A small metal or plastic device that that looks like a ball point pen, but uses pressure instead of ink to write, draw or make selections. |
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| A pointing device that fits comfortably in your hand. With the mouse you can control the pointer. Often called the mouse pointer onscreen. We have laser mice. |
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Definition
| Is a case that contains electronic components of the computer used to process data. |
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Definition
| Is sometimes called a system board, is the main circuit board, such the processor, memory and expansion slots. |
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Definition
| Is also called central processing unit (CPU). It interprets and carries out the basic instructions that operate a computer. |
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Definition
| Also called random access memory or RAM consist of electronic components that temporarily store instructions waiting to be executed by the processor. |
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| Equals one Memory locations |
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| Prints by striking an inked ribbon against the paper. |
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| Ink-jet, and laser printers form characters by means other than striking a ribbon against paper. |
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| Forms character or graphics by using a nozzle that sprays tiny drops of on the page. |
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| High-speed high-quality nonimpact printer that employs copier-machine technology. It convert 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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Definition
| Is an output device that visually conveys text, graphics, and video information. |
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| Display device that is packaged separately |
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Definition
| Is most popular uses a liquid crystal display, similar to a digital watch. |
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Definition
| Cathode ray tube displays images through pixels |
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| Individual picture elements |
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Definition
| Is used to store instructions, data and information when they aren't being used in memory. |
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| Use magnetic particles to store items such as data, instructions, and information on a disks surface. |
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| Is the process of dividing the disk into tracks and sectors, so the computer can locate data, instructions, and information on the disk. |
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Definition
| A track is a narrow recording band that form that forms a circle on the surface of the disk. |
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| The disk storage locations consist of pie shaped sections, break the tracks into small arcs. |
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| You can carry out the medium from one computer to another one. |
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| Also a hard disk drive is a storage device that contains one or more in flexible, circular platters that magnetically store data, instructions, and information. |
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| Read/Write head touches a platter, usually results in loss of data or sometimes the entire drive |
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| A duplicate of a file, program, or disk that you can use incase the original is lost, damaged, or destroyed. |
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| Older form of magnetic storage the floppy disk or diskette is an inexpensive portable storage medium. Is usually 3.5 inches typically stores up to i.44 Megabytes. |
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Definition
| Is a device that can read from a write on a floppy disk. |
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Definition
| The access time for floppy disks varies about 175 milliseconds to approximately 300 milliseconds. |
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