Selectionanduseofoutputmethods,mediaanddevices使用输出方法的选择媒体和设备.ppt

1、TCTGSG based on material from Mott,Leeming,Williams,Selection and use of output methods, media and devices,AQA INFO 1 Section 6,TCTGSG based on material from Mott,Leeming,Williams,How this fits into the course,When devising your solutions, you need to consider how the user will get information from

2、the computer. This topic will look at the various methods of output available to you.,TCTGSG based on material from Mott,Leeming,Williams,VDUs,also known as monitors and screens Display information to a user Different types include: Small screens on PDAs or mp3 players Large screens on TVs LCDplasma

3、 But what are they made up of?,TCTGSG based on material from Mott,Leeming,Williams,VDUs continued,Pixels make up the display Measured by resolution more pixels = better resolution Modern flat screens are light weight and more compact. Pixel defects can occur.,TCTGSG based on material from Mott,Leemi

4、ng,Williams,Printers,Types of printer: Dot Matrix Inkjet Laser When choosing a printer, you need to consider what it will be used for.,TCTGSG based on material from Mott,Leeming,Williams,Data Projectors,Very common on business demonstrations Project from a PC or laptop onto a big screen Quality is i

5、mproving so that some can be used in natural light. Often used in classrooms.,Plotters,Use pens which move around to draw detailed and accurate pictures Prints large technical drawings Used by engineers and architects,TCTGSG based on material from Mott,Leeming,Williams,Speakers,Common device to outp

6、ut music Many programs make audible warnings to indicate errors Can you think of other scenarios where sound is used?,Special purpose outputs,Large output devices for partially sighted Increasing size of the font Adjusting the screen resolution Using sound rather than visual output Braille printers

7、are available,TCTGSG based on material from Mott,Leeming,Williams,Headsets,Headsets in business are often combined with a microphone Allows telephone calls to be made whilst allowing user to multitask,TCTGSG based on material from Mott,Leeming,Williams,Case Study,The checkout at the supermarket has

8、a large number of output devices: As products are scanned, a screen displays details of the purchase A speaker makes a beeping sound to indicate item has been scanned Can you think of any other output devices they use?,Choosing an output device,What kind of image needs to be viewed? Where is it going to be viewed? Who is going to view the images? How many documents? What kind of media?,Summary,Output device