The three types of computer system organization;
- Single instruction, single data (SISD) stream: A single processor executes a single instruction stream to operate on data stored in a single memory.
- Single instruction, multiple data (SIMD) stream: A single machine instruction controls the simultaneous execution of a number of processing elements on a lockstep basis. Each processing element has an associated data memory, so that each instruction is executed on a different set of data by the different processors.
- Multiple instruction, multiple data (MIMD) stream: A set of processors simultaneously execute different instruction sequences on different data sets.
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