Please enable JavaScript.
Coggle requires JavaScript to display documents.
Chapter 7 Input and Output - Coggle Diagram
Chapter 7 Input and Output
Input - Programme ( X Software )
Data & Instructions entered into memory of computer
Devices
Keyboard
Input device - contains keys user press enter data & instructions
Type
Built - in keyboard
Clip - on keyboard
On - screen keyboard
Ergonomic / Microsoft / Google / Apple keyboard
Design that reduces chance of repetitive strain injuries
Avoid disease - Exp : Tennis elbow / rsi
Comfort
On screen keyboard
Accessibility - Supply for people who have some kind of physical inaccessibility
Customize - Only 101 keys - Laptop only have 99 keys
Physical keyboard spoiled
Pointing devices
Mouse
Fits under palm of hand comfortably
Optical mouse
Wheel button
Right button
Left button
Thumb buttons
Optic sensor can reflect movements
Laser mouse
Touch mouse
Apple
Contexture menu
Touchpad
Small, flat, rectangular
Sensitive to pressure & motion
Pinching / Tapping / Dragging ( X Speaking)
Pointing stick
Pressure - sensitive
Shape - pencil eraser
Position - between keys on mobile computer keyboard
Ball can turn for tracking
Trackball
Stationary with a ball on top / side
Right click - contexture menu
Pen
Stylus / digital pen
Flat surface / signature capture pad / graphic tablet
Write, draw, make solutions
Graphics tablet / digitizer
Electric plastic board
Detect & converts movements of style / digital pen into signal that sent to computer
Scanners & Reading devices
Scanner
Light - sensing input device
Read printed text & graphics
Translate results into form the computer can process
Flatbed scanner
Manner similar to copy machine
Except create file of document in memory instead of paper copy
No curving 放一张纸 然后 scan
Type
Flatbed scanner
Optical character recognition ( OCR ) scanner 是 scan 字母变正常 form
Optical mark recognition ( OMR ) scanner 是 scan 考试涂黑的字母
Barcode scanner
QR code scanner
MICR scanner （ magnetic thing ）
RIFD scanner ( reverse forward ) Exp : Smart tag
Magnetic stripe scanner
Reader
Optical reader
Device - Light source to read characters, marks, codes
Convert to digital data that computer can process
OCR & OMR
Bar code reader
Read bar codes
QR code
Stores information
Vertical & horizontal direction
RFID ( radio frequency identification )
Radio signals communicate tag placed in / attached to an object
RFID reader
Read information on the tag via radio waves
Magstripe readers
Read magnetic stripe on the back of card
Credit cards
Entertainment cards
Bank cards
Identification cards
MICR ( magnetic ink character recognition )
Devices - read text printed with magnetized ink
MICR reader converts MICR characters
Banking industry use MICR for check processing
Data collection device
Obtain data directly location where transaction / event takes place
Touch screen
Touch sensitive display device
Motion input device
Gesture recognition device
Guide on screen elements using air gestures
Voice input device
Voice recognition device
Speech recognition device
Capability of distinguishing spoken words
Built - in microphone
Video input device
Process - Capturing full - motion images
Storing on computer / mobile device's storage medium
Record video on digital video ( DV ) camera
Transfer video to computer / mobile device
Webcam
Type of DV camera
Capture video & still iamages
Make video calls
Output - Programme ( X Software)
Data - has been processed into useful form
Visual Display Unit ( VDU )
Conveys text, graphics, video information
Computer monitor
Packaged as separate peripheral device
Quality
Resolution
Response time
Refresh rate
How frequent the time refresh
Higher refresh rate , More smooth
Brightness
Dot pitch
Contrast ratio
4 : 3 Ratio standard
16 : 9 Ratio wide screen
Monitor
Use digital signal to produce picture
HDMI port
Laptop
Display port
Digital television ( DTV )
Display
HDTV
Smart TV
Internet - enabled HDTV
Printers
Produce text & graphics on physical medium
Type
Impact
Dot - matrix printers
Line printers
Noisy
For government office
Slow
Ink very expensive - Exp : Receipt keep for 7 years
Exp Question : Want to keep receipt in many years - Exp Answer : Line printers ( X lazer printers )
Form characters & graphics on paper by striking mechanism against inked ribbon that physically contact paper
Non - impact
Ink - jet printers
Form characters & graphics by spraying tiny drops of liquid ink
Color Black / White
Speed measured by number of pages per minute ( ppm )
Photo printers
Produces lab - quality pictures
Many use ink - jet technology
Pict bridge - allow print photos directly from digital camera
Print from memory card
Laser printers
High - speed
High - quality
Black & White
Color
All - in - one printers
Single device
Print, scans, copies in some cases, faxes
Multifunction printer
Multifunctional / aio / mfp printers
Function
Printing
Scanning
Faxing
Photostaping
Brand ( famous in Malaysia / use for company )
Brother / Kyocera / fold
Thermal printers
Generate images by pushing electrically heated pins
Dye - sublimation paper
Heated pins to heat - sensitive paper
Press ink to the cloth
Label printers
Small printer
Adhesive - type material that can placed on variety of items
Different material
Fabric
Print by burning
Mobile printers
Small, lightweight, battery - powered printer
Allow mobile user print from mobile device
Plotters
Produce high - quality drawings
Print 少一点颜色
Blue print 装修屋子图稿 = 有 line 而已
Large - format printers
Create photo - realistic quality color prints
能多一点颜色
Form characters & graphics without actually contacting paper
Sharpness of print output
300 DPI
600 DPI
1200 DPI
Use paints
Dots very near to each other
More dots, more sharpness, more clear
Speakers / speakers system
Generate higher - quality sounds
Center speakers
Satellite speakers
Subwoofer
Headphones
Speakers - cover / placed outside of the ear
Earbuds / Earphones
Rest inside the ear canal 耳蜗
Data projector
Device - display text & images on larger screen
Computer, mobile device screen
Interactive whiteboard
Touch - sensitive device
Resembling dry - erase board
Displays image on connected computer screen
Input / Output devices
Output device include force feedback
Joysticks
Wheels
Gamepads
Motion - sensing game controllers
Technology sends resistance to device in response to actions of user
Assistive Technology for Input / Output devices
Head - mounted pointer
Braille printer
Exp : Camera / receiver - reflective tracking surface attached to brim of hat
Essay Question
Which situation uses impact / non-impact printer ? Example
Answer : Impact printer Exp : keep receipt in more long time
Why use non impact printer instead use impact printer ?
Answer : Faster printing / Quiet less noisy / Ink is cheaper
XXX want to buy a new printer for his company , What printer he should buy and considerations when buying a printer ?
Speed of printing
Noise of printing
After sales service
Buy / Lease
File format support
Resolution
Sharpness of print output - DPI
Density - how close
Sharpness of display output - monitor
Exp : 800 PX * 600 PX
PX = Picel = Picture element
Define 3 types of headphone
Always ask about types
Identify and explain 2 more suitable output system