Understanding Computer Systems: Input, Output, and Interaction, Slides of Human Resource Management

Download Understanding Computer Systems: Input, Output, and Interaction and more Slides Human Resource Management in PDF only on Docsity! chapter 2 the computer Docsity.com 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 Docsity.com How many … • computers in your house? – hands up, … … none, 1, 2 , 3, more!! • computers in your pockets? are you thinking … … PC, laptop, PDA ?? Docsity.com 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 Docsity.com 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? Docsity.com