Which of the following digital logic families has the lowest power consumption?
The correct answer is D: CMOS. Which of the following digital logic families has the lowest power consumption is CMOS. CMOS has very low power consumption. For amateur radio operators, this is important for digital circuits. Understanding this helps when selecting logic families.
Exam Tip
Lowest power consumption logic family = CMOS. Think 'C'MOS = 'C'onserves 'M'ost 'O'f 'S'upply (lowest power). CMOS has very low power consumption. Not Schottky TTL, not ECL, not NMOS - just CMOS.
Memory Aid
"Lowest power consumption logic family = CMOS. Think 'C'MOS = 'L'owest 'P'ower. CMOS has very low power consumption. Important for digital circuits."
Real-World Application
Digital logic families: CMOS has the lowest power consumption. CMOS only consumes power during switching, making it very power-efficient. This is the family - CMOS has lowest power consumption.
Key Concepts
Why Other Options Are Wrong
Option A (Schottky TTL): Incorrect. Schottky TTL has higher power consumption - CMOS has lowest. Schottky TTL isn't lowest.
Option B (ECL): Incorrect. ECL has higher power consumption - CMOS has lowest. ECL isn't lowest.
Option C (NMOS): Incorrect. NMOS has higher power consumption - CMOS has lowest. NMOS isn't lowest.
题目解析
The correct answer is D: CMOS. Which of the following digital logic families has the lowest power consumption is CMOS. CMOS has very low power consumption. For amateur radio operators, this is important for digital circuits. Understanding this helps when selecting logic families.
考试技巧
Lowest power consumption logic family = CMOS. Think 'C'MOS = 'C'onserves 'M'ost 'O'f 'S'upply (lowest power). CMOS has very low power consumption. Not Schottky TTL, not ECL, not NMOS - just CMOS.
记忆口诀
Lowest power consumption logic family = CMOS. Think 'C'MOS = 'L'owest 'P'ower. CMOS has very low power consumption. Important for digital circuits.
实际应用示例
Digital logic families: CMOS has the lowest power consumption. CMOS only consumes power during switching, making it very power-efficient. This is the family - CMOS has lowest power consumption.
错误选项分析
Option A (Schottky TTL): Incorrect. Schottky TTL has higher power consumption - CMOS has lowest. Schottky TTL isn't lowest. Option B (ECL): Incorrect. ECL has higher power consumption - CMOS has lowest. ECL isn't lowest. Option C (NMOS): Incorrect. NMOS has higher power consumption - CMOS has lowest. NMOS isn't lowest.
知识点
Digital logic families, Lowest power consumption, CMOS
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.