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GPS Global Positioning System Lernen beginnen
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large touchscreen monitor used at school
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technology that helps people with disabilities for ex. screen reader
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a program that reads aloud onscreen text, menus and icons
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headset used with virtual reality (helmet, googles)
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artifical enviroment of the latest video games
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let you access the Internet without cables
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when computeras are down our way of life braks down, planes stop flying telephones don't work
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technology develops very quickly that we have to scrap computers when tehy become obsolete
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an inappropriate and excessive use of computers
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crime committed through internet
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unauthorised use of personal data or reciving unwanted electronic messages
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any electronic or mechanical part of the computer that you can see or touch
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set of instructions called program, which tells a computer what to do
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CPU (Central Processing Unit) Lernen beginnen
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the heart of the computer, a microprocessor chip which processes data and coordinates the activities of all the other units
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holds the instructions and data which are being processed by the CPU
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RAM (Random Access Memory) Lernen beginnen
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computer memory available to the user for creating loanding or running programs
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computre memory in which program instructions, operating procedures are permanently sotred and cannot be changed by the user
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physical units attached to the computer
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let us enter data and commands (e.g. the mouse, the keyboard)
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lt us extract the results (e.g. monitor, printer) ist the visible or audiable result of data processing
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are used to store information pernamently (e.g. hard disks)
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allows communication between the computer and the devices
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a large computer used for intensive data processing and often linked to many terminals
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a typical computer found in many businesses and popular for home use
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a portable computerthat can be closed up like a briefcase
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thin film transistor that produces very sharp images
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sensitive pad that you can touch to move pointer
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lats you use computer when there are no electrical outlets available
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a full-function PC, though it only weights 1.2kg
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a hand-held computer which can be used as telephone, a web explorer and personal organizer
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small enough to be used or operated while being held in the hand
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a sepcial pen used with touch screen
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touch-sensitive display screen on a computer or other electronic device
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recognizes characters written by hand
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having no wire, without cables
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a small computer thet fits into items of clothing
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appears to the right cointains numeric and editing keys
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is used to switch from numbers to editing functions
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top of keyboard can be programmed to special jobs
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arrow keys which move the insertion point, Home, End, Page Up
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to issue commands or produce alternative characters
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changes the function of other keys
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stes te keyboard in CAPITALS mode
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to select options from a menu to start a new paragraph
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deletes the character to the left of your current position
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converts voice into text, you can dictate text directly onto your word processor or email program
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reads images and converts them into electronic codes which can be understood by computer
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reads barcodes on the products sold in shops and sen the price to the computer
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consist of a series of black and white stripes used to give products a unique indentification number
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optical character recogniotion Lernen beginnen
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allows to scan pages of text and save them into your word processor/ scans and identifies characters
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tiny storage device/ retains information even if the power turned off
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processor CPU Central Processing unit Lernen beginnen
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small piece of silicon with complex electrical circuit(integrated circuit) that executes instructions and coordinates activities of all the other units
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examinces instructions from memory and executes them
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arithmetic ald logic unit (ALU) Lernen beginnen
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performs arithmetic and logical operations
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high-speed units of memory used to store and control data
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main circuit board, contains the CPU, memory chips, expansion slots and controllers for peripherals
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connections which carries electronic signals in motherboard
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is program installed to convert data into form that printer can understand
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stores files to be printed when the printer is ready, change order
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connects a printer to a network, enables users to share printing resources
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uses a group or matrix of pins to create the precise dot
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a head containing pins strikes an inkes ribbon to make letters
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generates an image by spraying tiny precise drops of ink onto the paper
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a container thet holds the ink in an ink-jet printer
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can work as scanners, printers, fax, photocopiers
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uses a laser beam to fix the ink to the paper
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page description language PDL Lernen beginnen
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a language that tells a printer how to print a document
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generates very high-resolution output
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draws detailed designs on paper
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