Among standard logic device families used today, which technology is the most widely adopted for general-purpose digital ICs?

Introduction / Context:
Standard logic families have evolved as semiconductor processes advanced. Performance, power consumption, and integration density determine which family dominates mainstream use. This question asks you to identify today’s most popular family.

Given Data / Assumptions:

• We consider widespread, general-purpose digital IC usage.
• Options include TTL, CMOS, and ECL families.

Concept / Approach:
Complementary metal-oxide semiconductor (CMOS) technology offers very low static power, high integration density, scaling with modern processes, and broad voltage range support. As a result, CMOS underpins the vast majority of digital ICs, from microcontrollers to FPGAs and ASICs. TTL, though historically important, consumes more static power and is largely confined to legacy/compatible parts. ECL provides very high speed but at a significant power cost, limiting it to niche applications.

Step-by-Step Solution:
Compare families on power, speed, and density.Recognize that CMOS best balances these for mass production and low power.Select CMOS as the most popular standard logic family.

Verification / Alternative check:
IC market data and vendor portfolios show CMOS domination across consumer, industrial, and embedded markets.

Why Other Options Are Wrong:
TTL is older and power-hungry; ECL is fast but power-intensive and niche; “None of the above” contradicts market reality.

Common Pitfalls:
Equating high speed with popularity; overlooking cost and power, which drive volume adoption.

Final Answer:
CMOS