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Module 1 Section 7 71Apple and the Mac - Introduction Microcomputers used command-line interfaces The Apple II had been the best selling microcomputer The Apple III had some initial flaws which gave the computer a bad name from which it never really recovered The idea at Apple was to build a machine that would be as easy to operate as any household appliance one which would be user friendly 72The Lisa The Lisa computer is a microcomputer that uses GUI Factor which made The Lisa expensive when it was released It was based around the powerful Motorola 68000 microprocessor Apple use Motorola chips instead of Intel ones It required 1 megabyte of memory a lot at the time It needed a hard drive unusual for the time Factors which removed The Lisa from the market It was expensive It was slow compared with the IBM PCs Examples of very powerful metaphors Desktop A blank sheet of paper on a word processor A computer folder The key to the GUI was the desktop metaphor originally developed at Xerox PARC How the desktop was considered as a metaphor The screen resembles the top of a desk with various files on it and even a waste basket If you want to move a file you simply grab its icon with the cursor and drag it where you want it as you would move real items around on your desk There are some elements of the desktop metaphor which are not found in the real world - for instance scroll bars menus etc There are also some confusing elements - for example on the Macintosh dragging a floppy disk icon into the waste basket ejects it and doesnt as one might expect dispose of it Released in 1983 the Lisa
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