Introduction to multitasking
Abstract
Most complex real-time systems require a number of tasks (or programs) to be processed at the same time. For example, consider an extremely simple real-time system that is required to flash an LED at required intervals, and at the same time look for a key input from a keyboard. One solution would be to scan the keyboard in a loop at regular intervals while flashing the LED at the same time. Although this approach may work for a simple example, in most complex real-time systems a multitasking approach should be implemented. The term multitasking means that several tasks are processed in parallel on the same CPU. In a multitasking system, several tasks to run on a single CPU at the same time. Therefore, ...
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