Discussion
Which of the following computer system is represented when many processing units are working under the supervision of a common control unit ?
Answer: B
This is SIMD, Single Instruction Stream, Multiple Data Stream.
In Flynn's classification, an SIMD machine has many processing elements under the supervision of one common control unit. The control unit broadcasts a single instruction, and all the processing units execute it at once on different data, as in array processors and vector units.
SISD has one processing unit, the ordinary uniprocessor. MISD applies several instruction streams to one data stream, and MIMD has several processors each with its own control unit and instruction stream, so neither has a single common control unit.
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