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| portable storage medium that consists of a flat, round, portable disk made of metal, Plastic, and lacquer that is written and read by a laser. Optical disks used in computers today are 4.75 inches in diameter |
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| (compact disk read only memory) is a type of optical disk that users can read but not write on or erase. Typical CD ROM holds from 650 MB to 1 GB of data |
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| the device used to read a CD-ROM |
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| (compact disc rewritable) an erasable optical disc you can write on multiple times. |
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| (digital versatile disk-read only memory)- a very high capacity optical disk capable of storing from 4.7 GB to 17 GB you can only you cannot write on DVD-ROM |
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| competing DVD-recordable formats, each with up to 4.7 GB storage, both allow writing once and reading many times. |
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| Blue-ray(BD-ROM) and HD DVD |
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| are higher quality and higher in capacity than standard and are rewritable DVD formats |
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| you need a recordable or rewriteable DVD-ROM drive |
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| a magnetically coated ribbon of plastic housed in a tape cartridge capable of storing large amounts of data and information at a low cost, tape is primarily used for long-term storage and backup. |
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| is what is used to read and write on a tape |
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| Miniature mobile storage media |
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| rewriteable media that allows users to transport digital images, music or documents easily to and from computers and other devices |
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| Types of miniature mobile storage media: |
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Flash memory card
USB flash drive
Smart cards |
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| solid state media, which means they consist entirely of electronics (chips, wires, etc.) and contain no moving parts. |
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| Common types of flash memory cards: |
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• Compactflash (CF): digital cameras, PDA's, smart phones, photo printers, portable media players, notebook computers, desktop computers
• Secure Digital (SD): Digital cameras, Digital video cameras, PDAs, smart phones, photo printers, portable media players
• xD picture card: Digital cameras, photo printers |
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| Digital cameras, digital video cameras, PDAs, photo printers, smart phones, handheld gaming consoles, notebook computers |
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| Digital cameras, smart phones, handheld gaming consoles |
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| sometimes called a pen drive or thumb drive, is a flash memory storage device that plugs into a USB port on a computer or mobile device, their capacities range from 32 MB to 64 GB, the portable storage media of choice |
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| similar in size to a credit card or ATM card, stores data on a thin microprocessor embedded in the card, when you insert the smart card in a specialized card reader, the information on the card is read and, if necessary, updated, they are used for storing medical records, tracking customer purchases, storing a prepaid amount of money and authenticating users |
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| a hardware component that enables a computer to send (transmit) and receive data, instructions and information from one or more computers, a widely used communications device is the telephone or cable modem |
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| telephone lines, cables, cellular radio networks, and satellites. Some transmission media, such as satellites and cellular radio networks are wireless. |
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| no physical lines or wires |
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| the key to productive use of computers, with a correct software a computer can become a valuable tool, software can be categorized into two types, system software and application software |
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| programs to control the operations of the computer equipment |
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| a set of programs that tell the computer how to perform the functions of loading, storing, and executing an application program and how to transfer data, for a computer to work the operating system must be stored in its memory |
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| when the operating system is loaded into the computer's memory from auxiliary storage |
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| Graphical user interface (GUI) |
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| an operating system that provides visual cues such as icon symbols to help the user |
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| a small picture that represents an application, file, or document where data is stored |
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| Examples of PC operating systems: |
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• Microsoft Windows Vista
• Windows XP
• Apple Mac OS X
• Linux |
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| programs designed to make users more productive and/or assist them with personal tasks |
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| application software includes: |
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• Web browsers
• Personal information managers
• Project management
• Accounting
• Computer aided design
• Desktop publishing
• Paint/image editing
• Audio and video editing
• Multimedia authoring
• Web page authoring
• Personal finance
• Legal
• Tax preparation
• Home design/landscaping
• Educational
• Reference
• Entertainment |
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| software used to create, edit, format and print documents, a key advantage of word processing software is that users easily can make changes in documents, such as correcting spelling, changing margins, and adding, deleting, or relocating entire paragraph. Is oriented towards text but has tools for numeric data and graphics |
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| Electronic spreadsheet software: |
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| allows the user to add, subtract, and perform user-defined calculations on rows and columns of numbers. If the numbers are changed they can be recalculated quickly |
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| allows the user to enter, retrieve, and update data in an organized and efficient manner. |
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| Presentations Graphics Software |
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| allows the user to create slides for use in a presentation to group. |
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| a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media. |
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| when a computer connects to a network |
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| large geographical network |
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