Slide 7/Narration

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The most significant feature of analog computer is its parallel processing capability. It is a Multiple Instruction on Multiple Data (MIMD) processing or the so-called an "array" processor. On the other hand, digital computer is with a sequential processing. It is a Single Instruction on Single Data (SISD) processing.
Non-procedural languages from fourth generation languages up, such as simulation languages of CSMP, DYNAMO, GPSS, etc., enable programmers to construct their instructions in parallel fashion. Procedural languages up to third generation languages such as operating systems, machine language, assembler, FORTRAN, etc., are highly sequential.