Xerox PARC

Module 1 Section 4 4.1         Xerox PARC - doorway Other than photocopiers, all the good ideas in computing presently in character terminate be traced back to PARC, including:         The instinctive user interface: such as the Macintosh and Windows operating(a) systems.         Ethernet: a common method of linking PCs unitedly and PCs to printers.         Object-oriented programming: forthwith the close common method of programming.         The laser printer. ________________________________________ 4.2         GUIs and WYSIWYG         Modes: the precursor to WYSISYG. arousal mode would be used for creating a enrolment and human action off mode for editing. Changing mode made preparing a document complicated because the screen display differed from what you would obtain from your printer. subsequently modes, there was the use of WYSIWYG         W YSIWYG: what you see is what you get a system that allows you to see on screen more or less what will be printed. A mouse or other pointing device buns be used to pull strings text, graphics and numbers. For WYSIWYG to be possible it was necessary to yield a pictorial substance abuser Interface         Graphical User Interface (GUI): an interface in which the cursor can be moved, text can be highlighted and several(prenominal) documents opened at the same time. To do all this, the applied science of bit-mapping was required.         Bit-mapping: a technique used to represent images; images are divided up into cells and a value is allocated to each cell. Bit-mapping is used in          move a fax.

The Alto: was the first machine to use a GUI. ________________________________________ 4.3         Ethernet Benefits from connecting computers together in a engagement         Sharing resources         communicating         File access Networks can be classified by 1.         Topology: The shape of the net profits physical structure. The three briny network types a)         Star network: a network coherent in a star shape with a key or hub computer and several node computers. A network of automated... If you regard to get a full essay, order it on our website: OrderEssay.net

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