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allows computers to communicate and negotiate with customers through electronic funds transfers and electronic data interchange |
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the removalof supply chain intermediaries |
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ergonomics (human factors) |
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scientific application of information about humans to the dessign of objects, systems and environments that humans interact with (makes computers more comfortable through keyboards, mouses etc) |
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assistive technology products include |
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public access, text to speech, dragon naturally speeking |
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an assistive technology product that ensures public with disabilities have access to public accomidations |
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an assistive technology product that is software that aids in reading documents through typed word to sound |
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dragon naturally speeking |
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an asistive technology product that is a speech recognition program that allows the computer to use spoken commands |
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social concerns with computer use include |
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-child protection (protecting and preventing inappropriate material) -computer addiction -pornography (wide spread and addictive, said to be first use of e commerce) -dangerous information (banned books, political discussions, how to etc) |
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the study and practice of using computing resources efficiently with a world wide perspective (buying green, save trees, recycle etc) |
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"computer as the target" crime |
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crimes in which theft of intellectual property, marketing information, computerized files, and other info |
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"computer as the instrument of the crime" crime |
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involves converting legitimate computer processes for illegitimate purposes |
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"computer is incidental to other crimes" crime |
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Definition
not related to teh criminal act but assisted it to make it easier / faster |
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"crimes associated with the prevelance of computers" crime |
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single presence of computers generate new versions of traditional crimes |
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ways to protect data include |
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-discard unnecessary materials -seperate job functions -allow audit checks of data and security systems |
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a plan that is made to recover necesary information from a backup and recover a system fast and efficiently without downtime |
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intput data > process data > output information |
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processing of providing a context for data |
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using bits (1s and 0s) to make code and context and shit |
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the american standard code for information interchange, states a standard for bit pattern representations |
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when comensation techniques are used to reduce the number of bytes required to store certain kinds of data (used for faster transmission of data) |
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one component of the computer that ties the rest together |
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components of a motherboard |
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the processor on teh motherboard |
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main body of a computer that provides an enclosure of the important shit |
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Central Processing Unit CPU |
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processes data by intrepreting and executing instructions that are contained in computer programs |
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CPU manufactured wuth integrated circuits |
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manager that keeps things organized and synchronized in teh system unit |
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where the mathematical and logical operations are performed within the system unit |
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processor that combines 2 or more independent processors into one package (also called chip level multiprocessing) |
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processor speed is displayed in... |
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one billion hertz (one billion cycles per second) |
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instructions per second (one million per second, used to benchmark processors) |
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floating point operations per second (performance based) |
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a subsystem that transfers data between components |
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temporary but fast storage |
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within the computer and closely connected to the processor (programs are held here while running) |
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the time between the processor initiating a request for a byte or word in memory until it is retrieved |
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special high speed memory (not necessary to communicate with RAM) |
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read only memory, hard to edit so its main uses are for distribution of firmware |
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software closely related to hardware |
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allows multitasking computers to think that teh computer has more primary memory that it actually has |
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mainframe (category of computer) |
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used by large organizations for the use of bulk data processing |
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super computer (computer category) |
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processes data exceptionally fast (forecastting and simulation) |
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microcomputers (computer category) |
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Definition
personal coputers, one user, desktops adn laptops |
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workstations (computer category) |
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powerful high end microcomputers used for applications requesting more power |
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minicomputers (computer category) |
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multiple users for processign transactions |
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types of input devices include |
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keyboard mouse microphone camera scanner barcode readers card reader speech recognition |
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-mechanical (ball on bottom) -optical (light on bottom) -touchpad (on laptops used through tough) -trackball (rotating ball on top) |
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monitors graphic cards printers plotters speakers digital music players |
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expressed in dot pitch and dots per inch |
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number of individual pixels on display. given in ratios of horizontal x vertical |
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the frequency with which the monitors display is refreshed |
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array of colora a computer can display, (24 bit is up to 16million colors) |
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2 measures of printer performance are |
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-DPI dots per minute -PPM pages per minute |
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-laser -ink jet -dot matrix (impact printer that runs back and forth and prints by impact) -photo printers (ink jets that are made to do high quality pics) -thermal printer (heated and shit, does receipts) |
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devide that modulates a carriers signal to encode a computers digital data, and then demodulates the signal to decode the data |
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used to trasmiit the modems signal to a computer (access point is the router and knows as WIFI) |
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the master program controlling all resources within a computer |
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tasks of operating systems |
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process management memory management file system mapping file association |
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runs programs and allocates memory, deals with running multiple processes, uses context switching |
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when the OS tracks what is needed and what is available and then reallocates memory (virtual memory management) |
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files must be managed and kept track of by teh OS, keep from fragmenting |
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OS nagigating in a logical way of physical location of content to the logical content of a file |
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al files that are the same type will have the same extension |
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OS that multitasks teh ability to run several programs at once, opened door to many people unable to use command syntax |
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OS that is used in servers and workstations, programmed in language C, open systems/free software, master program is Kernel, strings together small programs to do bigger shit |
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OS like Unix, best example of open source development and free software, all programs are available to use by anybody, cameras/ps3/phones/mainframes/supercomputers |
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OS that eliminated possibility of one program crashing others, unix style multitasking |
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copies of different OS's can run on one computer at the same time |
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scans and searchign for errors in files |
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scans an entire disck drive and looks for segments of unused disk area (helps computer run better and prevent data loss) |
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allows you to remove unused or little used files |
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overcomes sluggishmess from background idle programs running in RAM |
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extends amount of RAM available by external memory used as an addition cache |
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allows users to control hundreds of teh computers individual components |
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like an OS, enables other software to run properly |
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like word processors, enables a user to perform a task |
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devide drivers link software to hardware |
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software is an intermediary between hardware and data (data=input and output) |
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computer programing relationship |
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Definition
application software is usually written in high level programming language called source code and translated into machine language |
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programs execute by users telling it what to do |
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everything goes through the operating system |
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Definition
-used in computers cabinets or externel drives that are fast and store a large amount -round rotation plates called platters -sectors are pie shape part of platter -organizaed in rigns called tracks |
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stores data on a rotating surface (1.44 MB's) |
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USB drives and solid state (up to a few GB's) |
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RAID redundant array of independent disks |
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Definition
technique that devides or replicates data among multiple hard drives (in tolerant computers, adds reduntand data, reduces data loss) |
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replication of logical disk volumes onto seperate hard disks in real time to ensure continuous availability of data, helps disaster recovery |
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optical storge device that contains data that is assessable to a computer from cd rom drive, stored by microscopic indentions called pits and read into bianary data, about 650 MB of data |
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like a cd but 4-5 gb of storage |
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unharmful data loss not intended to damage |
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an aggressive attempt to prevent ligittimate users of a service from using that service or the server its installed on |
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protection of propriority information between employeed and viruses |
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prevent through geolocation and order velocity monitoring |
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how can a copany protect against fraud |
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Definition
-information acquisition (does the business have a good reason to access info?) -storage (what computer security measures are placed aroun the systems storing personal data?) -data access (is personal identifying info available only to those that need to know) -data disposal (once data isnt needed is it disposed) -personnel (are background checks and shit done?) |
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[iece of data stored in a text file on a computer |
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cookie that accesses personal data and sends it to a server somewhere over the fucking rainbow |
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virus attached to an email for transportation between computers |
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written in scripted language and spread by inflecting documents and spreadsheets |
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shitspread through emails |
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travel through messaging networks |
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file sharing networks worms |
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copy themselves to shared folders on hard disks |
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use TCP/IP communication ports |
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pretend to be something else to trick a user |
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technique embedded in a program that enables recording and reporting of users key strokes |
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trickign a person into giving away private account info |
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tools used to monitor the activity of consumers at a website |
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abuse of email or messaging networks to send unsolicited and undesired messages |
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is a ocmputer attached to teh internet that has been compromised by a securiy hacker or trojan or virus |
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set of software tools intended to conceal runnign proceses, files, or system data from the operating system |
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Definition
when someone elses personal information is used to commit fraud or crimes |
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crime and involves using illegally obtained information to committ fradulent tasks |
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password hacking (cracking of passowrds) can be done by... |
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Definition
-guessing -dumpster diving -shoulder surfing -brute force attack (going through options) -distionary attack (tries all combos likely to succeed) -packet sniffing (interccepting and logging traffic through a network) |
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Definition
tomaintain a high standard of data quality and define acceptable behaviors |
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what to consider when backing up files |
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Definition
-schedule back ups -making multiple copues of backups -storage of backup copies should be physical and away from source -data compression is important when there is more data than media space |
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Definition
process of obsuring information to make it unreadable without special knowledge |
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using alogorithims to encrypt and decrypt |
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electronic funds transfer |
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provides payments and collection of receipts using electronic networks and equipment |
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electonic data interchange |
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thecomputerto computer interchange of structured information |
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using computers and networks to automate commercial transactions |
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business to business business to comsumer customer to customer business to governmet citizen to government business to |
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what lures businesses towards e commerce |
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Definition
lower transaction costs larger purchases per transactions business cycle integration people shop in different ways larger catelogs enhanced customer interaction new business models |
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4 main types of intermediaries who participate in e commerce |
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Definition
brokers auctioneers exchanges dealers and resellers |
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success factors of e commerce |
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market research interface documentation security inviting value incentive |
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unfulfilled expectations unsatisfactory web experience navigation motivation awkward proceesses security suitability |
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fraud concerns related to e commerce |
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stolen credit cards phishing click fraud auction adn retail schemes markt manipulation spam |
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software as services model |
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sensor so small that it floats in teh air, monitors the environment |
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system for collecting, storing, managing, and analyzing data which are referenced to the earth |
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little medical things that patrol the body and repeal invaders, like an artificial immune system |
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focus on learning on users interests and act on users behalf |
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little deals that compare prices on the internet and disable viruses before they reach a computer |
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basically an internet with more artificial shit |
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family of digital video compression standards |
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graphic interchange format (8 bit per pixel bitmap image format |
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standard digital audio file format for storing sound data, allows audio recording to be captured and stored often on a cd |
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allows peripheral devices to be connects without the need to plug expansion cords into the computers |
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describes the process for attaching a new device to the computer system, allows the addition of a new device without requiring reconfiguration or manual installiation |
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basic input/output system, small program run by a computer when first powered on, used to stabilize the machine and shti |
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graphical user interfaces |
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allows users to navigate a computer using a mouse |
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