The Intel microcomputer set MCS-80 is based on which widely used Intel microprocessor architecture?

Introduction / Context:
Early microcomputer systems were marketed as chip sets or microcomputer sets (MCS). Recognizing which CPU core an MCS references helps relate development tools, instruction sets, and compatible peripherals.

Given Data / Assumptions:

• The product name is Intel MCS-80.
• We must identify the underlying Intel processor.
• Options include several Intel 8-bit and 16-bit families.

Concept / Approach:
Intel's MCS-80 refers to the 8080-based microcomputer set, including CPU and support components. It preceded the 8085 (MCS-85) and the 16-bit 8086 family. The 8082 was not the canonical CPU core of an MCS line.

Step-by-Step Solution:
Link MCS designation to CPU: MCS-80 → 8080.Eliminate later or different-architecture CPUs (8085, 8086).Confirm the naming convention: MCS-85 is for 8085; MCS-86 is for 8086; thus MCS-80 maps to 8080.

Verification / Alternative check:
Historical documentation and developer kits consistently pair MCS-80 with the 8080 CPU and its associated peripherals (e.g., 8224 clock generator, 8228 system controller).

Why Other Options Are Wrong:

• 8085 microprocessor: Corresponds to MCS-85.
• 8086 microprocessor: 16-bit architecture (MCS-86), not MCS-80.
• 8082 microprocessor: Not the standard CPU basis of a named MCS line.
• None of the above: Incorrect; 8080 is correct.

Common Pitfalls:
Confusing sequential numbering (8080 vs 8085) with MCS labels. Always map the exact MCS family to its CPU.

Final Answer:
8080 microprocessor