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New CPU whose instruction set includes the instruction set of its predecessor CPU is said to be ___________ with its predecessor.(a) fully compatible(b) forward compatible(c) compatible(d) backward compatibleThe question was posed to me during an online exam.This intriguing question originated from Registers topic in section Processor & Memory of Computer Fundamentals

Answer»

The correct answer is (d) BACKWARD compatible

For explanation: The CPU is CALLED backward compatible since it contains the INSTRUCTION set of its PREDECESSOR. Manufacturers tend to group their CPUs into families having similar instruction set.



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