Interactive
graphics is the most demanding of all personal computer applications. It
demands high resolution graphics, often in colour and usually over a large
display area. It also needs a high rate of response and this taxes both the
data transfer rate to the video RAM and the speed of the processor. Large
amounts of memory are also required to store both the program and the data
describing the image. At this point you might think that the disk system isn’t
critical but, while not as important as other aspects of the system, it does
govern the time taken to save and load graphics files. If the applications
program uses temporary disk storage then it can even affect the response time
of the program.
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