Karteikarten
ICT unit 2
Karten in diesem Stapel (41)
- 1What data does a keyboard produce, how is it connected and what are the uses?-Text and number data
-qwerty(de facto standard)
-custom keyboards(grail)
-ergonomically designed
-wired/cable
-holographic
-touchscreen
-mobile keyboard. - 2What data does a mouse produce and what are the uses?-GUI
-can control cursor using hand or foot
-senses movement(ball-needs mat, optical, laser-more precise)
-easy
-cheap
-moves cursor faster than arrow on keyboard
-cannot enter text data. - 3What is a joystick and what's it's uses?-A pointing deice which moves cursor position on a monitor screen.
-mainly used in computer aided designing and computer games. - 4Uses of a touch screen?-Simple but easy
-input handwriting. - 5Scanner and its uses?-Used when some info is available on paper and needs to be transferred to hard disc of computer for further manipulation
-captures images from source and
-converts into digital form that can be stored on disc
-edit images before printing. - 6Digitalizer and its uses?-Converts analogue info into digital
-converts signal from television/camera into series of numbers that can be stored in a computer
-used by a computer to create pictures
-used for doing fine works of drawing/image manipulation. - 7Microphone uses?-Input sound that is stored in digital form
-add sound to a multimedia presentation
-mixing music, communication, speech recognition. - 8Magnetic ink card reader uses?-Used in banks to process cheques
-banks code number an cheque number are printed on cheque with special ink which contains magnetic material(machine readable)
-reading process= magnetic ink character recognition
-fast
-less error prone. - 9Optical card reader uses?-Used to read printed text
-scans text optically, character by character(converts into machine readable code + stores text on system memory)
-application forms
-quick to use. - 10Bar code reader uses?-Reads bar code data (data in form of light/dark lines)
-used in labelling goods
-numbering books
-hand held/embedded/stationary scanner
-scans bar code image, converts into alphanumeric values, then feeds too a computer which the bar code reader is connected to. - 11Optical mark reader/recognition (OMR) uses?-Type of optical scanner used to recognise type of mark made by pen/pencil
-used for checking answer sheets of exams (multiple choice answers)
-special paper has to be used
-exam marking, lottery tickets
-expensive
-not flexible
-fast
-efficient. - 12Biometrics uses?-Identifies individuals by measuring biological features
-face scanner (very secure)
-hand scanner
-retina/iris scanner (more secure as retina/iris cannot be duplicated)
-voice scanners (secure but less sophisticated scanners can be passed by tape recording). - 13Radio frequency chips uses?-Passports
-contactless payments
-trackers
-transmit GPS coordinate. - 14How to chose input?-Depends on data you're inputting
-how much data to input
-automatic/manual
-user preferences/needs
-cost
-location. - 15What is a CRT monitor (VDU [visual display unit])?-Based on cathode ray tubes that fire electrons at screen to make each pixel glow a different colour
-take up lots of room
-most systems now sod with TFT monitors
-high power consumption
-give clear, sharp displays
-low cost - 16What is TFT monitor (this film transistor)?-flatter, takes up less space
-use liquid crystals to form image
-small - 17Large displays examples?-Digital projectors
-interactive whiteboards
-plasma screens - 18Small displays examples?-Mobile phone screens
-PDAs - 19What is a laser printer?-Formed on the page using a laser beam on a light sensitive drum that uses electrostatic charges to attract toner particles
-monochrome lasers(high quality, quick, b&w)
-colour laser printers(cheap, poor quality, lower resolution) - 20Ink jet printers?-Good for home use; cheaper to buy, expensive to run, slow
-spays ink onto paper
-high resolution; better quality. - 21Multi-function printers?-Include a built in scanner
-suitable for small office/home use. - 22Dot matrix printers?-Used for multi part stationery
-quick, continuous
-used in industrial situations where high volume prints are needed
-lower quality. - 23Speakers?-5.1 surround stereo sound(phone,head phones, monitor)
-everyone in room can hear
-creates atmosphere on presentation
-convert text into sound
-disturbs people
-expensive. - 24How to chose an output device for an image?-depends on image
-might require high resolution
-how many people viewing screen
-environment(theater, conference room)
-high or low quality
-need to be fast
-how much to print
-what type of paper is needed
-what size of paper - 25What is a system software?-operation systems, utility software
-allows user to use hardware of a device
-manages memory when computer is running another task
-controls where data is stored on disk
-communicating with input/output device
-deals with data stored on hard drive
-deals with errors
-provides GUI interface
-system security. - 26Application software?-Needed for users to carry out specific tasks
-must be compatible with operating system
-processes;text, image, video, sound
-multimedia software. - 27Features of word processing?-add images
-text based
-edit font, size, colours, layout
-grammar/spell check, thesaurus, dictionary, word count
-wizards
-template
-mail merge
-share projects. - 28Features of desktop publishing?-Text/images
-focuses on document layouts
-basic drawing capabilities
-more flexible than word processor
-leaflets, brochures, letters, cards, website design. - 29Waveform features?-High quality
-high file size
-can change pitch
-change pattern of waves
-change speed
-change volume
-cut/paste/copy sections of sound waves
-mix sounds
-loop sounds
-apply effects(echos, fading)
-write music using notes
-generate sounds
-connect an instrument
-autotune
-change instrument sound - 30multimedia features?-presentation software
-edit text
-change font
-create animations
-use templates
-use built in styles
-add sounds/voice overs
-education
-training material
-business advertisement
-create handouts
-create notes
-automatically times
-built in transitions/templates - 31Web authorizing software features?-Creates webpages via dragon drop features
-creates HTML for you
-easy to add menus
-can add links, pictures, menus, n submission forms without having to know code
-Cascading Styling Sheets
-easy to upload to internet - 32Features of email?-Contact details set up
-send emails to multiple people
-forward emails
-create carbon and blind copies
-set up folders and direct mail into folders
-set up high priority emails
-set up automatic replies
-electronic signatures
-built in virus checks - 33Features of a web browser?-allow access + navigate www or internet
-homepage
-favorites
-RSS feeds(simple sindications;updates for websites)
-look at history
-ad blockers
-tabs open/close - 34Why do we store user documents/data?-So they can be easily edited
-can be backed up
-transfer - 35Disadvantages of storing user documents/data?-takes up a lot of space(high resolution media..)
-storing high resultion videos require compression (loses quality)
-data can become corrupt - 36Features of bitmap image specialized software?-made up of pixels
-resolution=no. of pixels
-allows detailed images
-have to create pixels when re-sizing a bitmap image, reduces quality
-can re-size images
-crop
-airbrush
-remove red eye
-add effects(water colour..)
-use layers to create composite images (overlapping) - 37Features of vector graphics/images specialized software?-made up of lines
-stores position/length of lines numbers
-can re-size vector graphics(unsuitable for photographs)
-small file size
-not detailed;unsuitable for photographs
-good for cartoon based graphics/computer aided design
-mostly 3d
-limited by compatibility(needs specific software) - 38features of moving images?-Consists of still image frames
-24 frames per second(standard) - 39Features of a video editing software?-cut, copy, paste sections of video
-adjust brightness
add effects
-change speed
-change colours
-add titles
-add sound effects/music
create DVD menus/chapters
-raw, uncompressed video=large file size
-compressed video=small file size(lower quality) - 40Features of animation software?-2d/3d
-vector based
-create frames
-create frames
can hand draw on graphics pad
-use key frames - 41—
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- AS - Level ICT Karteikarten am ICT unit 2, erstellt von hanna akhrass am 15/12/2015.
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- hanna akhrass
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