Integrated circuit density classification: what is the typical functional capacity range (in approximate gate count) used to classify large-scale integration (LSI) devices in classic terminology?

Introduction / Context:
Historically, integrated circuits (ICs) have been classified by the approximate number of logic gates per chip: SSI, MSI, LSI, and VLSI. While modern chips far exceed these numbers, the classic definitions still appear in exams and foundational texts.

Given Data / Assumptions:

• SSI (small-scale integration) denotes very few gates per chip.
• MSI (medium-scale integration) denotes tens of gates per chip.
• LSI (large-scale integration) denotes hundreds to thousands of gates per chip, before VLSI.

Concept / Approach:
The well-accepted classical ranges are: SSI ≈ 1–10 gates, MSI ≈ 10–100 gates, LSI ≈ 100–10,000 gates, VLSI > 10,000 gates. Exact boundaries vary by source, but these orders of magnitude are consistent across curricula.

Step-by-Step Solution:

Verification / Alternative check:
Cross-check against typical examples: early microprocessors and memory ICs were in the LSI/VLSI boundary zone around these counts, confirming the range.

Why Other Options Are Wrong:

Common Pitfalls:
Memorizing exact cutoffs rather than the order of magnitude; different textbooks may list slightly different thresholds, but the LSI band unquestionably spans roughly 10^2 to 10^4 gates.

Final Answer:
100 to 10,000 gates