Deep Dive: E7A02
The correct answer is A: It produces one output pulse for every 10 input pulses. What is the function of a decade counter is that it produces one output pulse for every 10 input pulses. Decade counters divide by 10. For amateur radio operators, this is important for digital circuits. Understanding this helps when using counters.
Why Other Answers Are Wrong
Option B: Incorrect. Decoding decimal number for seven-segment display isn't the function - decade counter divides by 10. Decoding isn't the function. Option C: Incorrect. Producing 10 output pulses for every input pulse isn't correct - decade counter produces 1 output for 10 inputs. 10 outputs isn't correct. Option D: Incorrect. Decoding binary number for seven-segment display isn't the function - decade counter divides by 10. Binary decoding isn't the function.
Exam Tip
Decade counter function = produces one output pulse for every 10 input pulses. Think 'D'ecade 'C'ounter = 'D'ivides by '1'0. Decade counters divide by 10. Not decoding, not 10 outputs - just 1 output for 10 inputs.
Memory Aid
Decade counter function = produces one output pulse for every 10 input pulses. Think 'D'ecade 'C'ounter = 'D'ivides by '1'0. Decade counters divide by 10. Important for digital circuits.
Real-World Example
A decade counter: Its function is to produce one output pulse for every 10 input pulses. This divides the input frequency by 10. This is the function - 1 output for 10 inputs.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E7A
Reference: 2024-2028 Question Pool · E7 - Practical Circuits
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E7A topic.