HUMAN-COMPUTER THIRD DIX FINLAY INTERACTION EDITION ABOWD BEALE chapter 2 the computer
chapter 2 the computer
HUMAN-COMPUTER NTERACTION The Computer a computer system is made up of various elements each of these elements affects the interaction input devices-text entry and pointing output devices- screen(small&large), digital paper virtual reality -special interaction and display devices physical interaction -e.g. sound haptic bio-sensing paper-as output(print) and input(scan) memory RaM permanent media capacity access processing-speed of processing, networks
The Computer a computer system is made up of various elements each of these elements affects the interaction – input devices – text entry and pointing – output devices – screen (small&large), digital paper – virtual reality – special interaction and display devices – physical interaction – e.g. sound, haptic, bio-sensing – paper – as output (print) and input (scan) – memory – RAM & permanent media, capacity & access – processing – speed of processing, networks
HUMAN-COMPUTER NTERACTION Interacting with computers to understand human-computer interaction need to understand computers what goes in and out devices, paper sensors etc what can it do? memory, processing networks
Interacting with computers to understand human–computer interaction … need to understand computers! what goes in and out devices, paper, sensors, etc. what can it do? memory, processing, networks
HUMAN-COMPUTER NTERACTION A typical computer system screen or monitor on which there are windows keyboard window 1 mouse/ trackpad variations desktop 口變 laptop PDA 翻 12-37pm the devices dictate the styles of interaction that the system supports If we use different devices then the interface will support a different style of interaction
A ‘typical’ computer system • screen, or monitor, on which there are windows • keyboard • mouse/trackpad • variations – desktop – laptop – PDA the devices dictate the styles of interaction that the system supports If we use different devices, then the interface will support a different style of interaction window 1 window 2 12-37pm ?
HUMAN-COMPUTER NTERACTION How many computers in your house? hands up, none, 1,23 more computers in your pockets? are you thinking PC, laptop PDa??
How many … • computers in your house? – hands up, … … none, 1, 2 , 3, more!! • computers in your pockets? are you thinking … … PC, laptop, PDA ??
HUMAN-COMPUTER NTERACTION How many computers in your house? in your pockets? PC PDA TV, VCR, DVD, HiFi phone, camera cable /satellite TV smart card card with microwave, cooker magnetic strip? washing machine electronIc car key central heating USB memory security system try your pockets and can you think of more? bags
How many computers … in your house? – PC – TV, VCR, DVD, HiFi, cable/satellite TV – microwave, cooker, washing machine – central heating – security system can you think of more? in your pockets? – PDA – phone, camera – smart card, card with magnetic strip? – electronic car key – USB memory try your pockets and bags
HUMAN-COMPUTER NTERACTION Interactivity? ong ago in a galaxy far away batch processing punched card stacks or large data files prepared long wait… line printer output and if it is not right Now most computing is interactive rapid feed back the user in control (most of the time) doing rather than thinking Is faster always better
Interactivity? Long ago in a galaxy far away … batch processing – punched card stacks or large data files prepared – long wait …. – line printer output … and if it is not right … Now most computing is interactive – rapid feedback – the user in control (most of the time) – doing rather than thinking … Is faster always better?
HUMAN-COMPUTER NTERACTION Richer interaction sensors and devices everywhere
Richer interaction sensors and devices everywhere
HUMAN-COMPUTER NTERACTION text entry devices keyboards(QWERTY et al. chord keyboards, phone pads handwriting, speech
text entry devices keyboards (QWERTY et al.) chord keyboards, phone pads handwriting, speech
HUMAN-COMPUTER NTERACTION Keyboards Most common text input device Allows rapid entry of text by experienced users Keypress closes connection causing a character code to be sent Usually connected by cable, but can be wireless
Keyboards • Most common text input device • Allows rapid entry of text by experienced users • Keypress closes connection, causing a character code to be sent • Usually connected by cable, but can be wireless