By Sylvia Langfield, Dave Duddell
Cambridge overseas AS and a degree machine technology deals an entire set of assets to accompany the 9608 syllabus. This coursebook provides an available consultant to the theoretical and functional talents which are required by way of the direction, with a transparent development of initiatives that consolidate and strengthen wisdom. It bargains scholars unique descriptions of the innovations, strengthened with examples that define advanced subject material in a transparent means. along basic definitions, better point programming talents are built throughout the clarification of approaches and consolidated by way of useful exam-type questions for college students to try.
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Additional info for Cambridge International AS and A Level Computer Science Coursebook
Ii  Explain the sequence of events executed by the client computer and the web server when this application is used.  Learning objectives By the end of this chapter you should be able to: • • show understanding of the need for primary storage • show understanding of the need for secondary (including removable) storage identify hardware devices used for input, output, secondary storage • show understanding of the basic internal operation of specific types of device. -- < - - -- -- - --- ' .
Normally, neither screen nor printer technology can produce varying size dots but the same effect can be produced by varying the number of dots created in what can be described as a halftone cell. It is now standard practice for grey-scale images or colour images to be presented using a halftoning technology. This requires a raster image processor, which can be a combination of hardware and software, to control the conversion of data stored in a graphics file to the physical screen display or printed page.
03 . Compute r users would really like to have a large amount of primary storage that costs little and allow s quick access. Th is is not possible; the fastest components cost more and have limited ca pacity. In practice, the choice made is a compromise. It cou ld b e argued that there is a need for secondary storage because t he use of only primary storage w ould be far too expensive. However, it is more sensib le simply to recogn ise that long-term storage of data requires separate dedicated components .