Bus compatibility: True or False – An ISA expansion card can be physically installed and used in an EISA motherboard slot.

Introduction / Context:
EISA (Extended ISA) was designed to be backward compatible with ISA cards. Understanding physical and electrical compatibility helps technicians plan upgrades and reuse legacy peripherals where practical.

Given Data / Assumptions:

• An EISA slot includes connectors that accept ISA cards.
• We consider standard, properly keyed cards without mechanical damage.
• System BIOS and OS support are assumed for basic functionality.

Concept / Approach:

EISA preserves ISA signaling and timing to allow legacy ISA cards to function in EISA slots. Therefore, an ISA device can be placed in an EISA slot and typically works as it would in an ISA system, although EISA-specific features are not utilized by the ISA card.

Step-by-Step Solution:

Verification / Alternative check:

Motherboard manuals from the EISA era document ISA card support in EISA slots, reinforcing backward compatibility as a design goal.

Why Other Options Are Wrong:

• False: Contradicts the backward-compatibility feature built into EISA.

Common Pitfalls:

Assuming performance improves merely by using an EISA slot; ISA cards still operate at ISA speeds and capabilities.

Final Answer:

True