What difference do the fifth generation computers have from other generation…

Computer generations are classified by the core hardware and processing technology that powers them, not by any single programming paradigm or software category: first-generation machines ran on vacuum tubes, the second on transistors, the third on integrated circuits, the fourth on microprocessors and VLSI chips, and the fifth on Artificial Intelligence, Ultra Large Scale Integration (ULSI), and parallel processing.

Because each generation boundary is drawn along this shift in underlying technology, the property that separates any one generation of computers from the others is a technological advancement in its hardware and processing capability -- this holds for the fifth generation exactly as it holds for every generation before it. A programming style used to write software, or the subject area a program is written for, does not define where one generation ends and the next begins.

• Object-oriented programming is a software-design paradigm that predates fifth-generation hardware and continues to be used across several generations of machines, so it cannot be the property that marks a generation boundary.

• Scientific code names an application area for software, not a hardware/technology basis, so it does not distinguish one generation of computers from another.

• Since exactly one of the offered descriptions -- the technology-based one -- captures the generation-defining trait, a claim that more than one of them does is not supported.

• Since one of the offered descriptions does capture the generation-defining trait, a claim that none of them does is not supported either.

Technological advancement is therefore the description of what sets the fifth generation -- and every generation -- of computers apart from the others.