PC bus standards — What does the acronym EISA stand for?

Introduction / Context:
EISA is a legacy 32-bit expansion bus introduced to succeed ISA in servers and high-end PCs. Knowing full forms of classic acronyms aids in interpreting documentation and troubleshooting expansion compatibility.

Given Data / Assumptions:

• We are referring to the historical PC hardware standard from the late 1980s/early 1990s.
• Acronym expansion must match the official name.

Concept / Approach:

EISA literally expands to Extended Industry Standard Architecture. Alternatives like “Expanded” or “Enhanced” are common mis-remembrances but are not the formal name.

Step-by-Step Solution:

Verification / Alternative check:

Contemporary vendor literature and standards lists confirm the wording “Extended.”

Why Other Options Are Wrong:

“Expanded” and “Enhanced” are incorrect and would refer to different concepts. “Electronics” is also incorrect. “All of the above” cannot be true if only one is correct.

Common Pitfalls:

Confusing EISA with “Enhanced ISA” marketing terms used loosely for other upgrades or with VLB/PCI evolution.

Final Answer:

Extended Industry Standard Architecture.