Get ready for the FCC General Radiotelephone Operator License (GROL) exam. Study with flashcards and multiple choice questions, each with hints and detailed explanations. Prepare effectively for your licensing test!

Multiple Choice

In a positive-logic circuit, what level is used to represent a logic 1?

In positive-logic circuits, a logic 1 is represented by a high voltage level on the line. This “high level” is typically near the supply voltage, while a logic 0 is represented by a low level near ground. This convention is called active-high, and it’s standard for most TTL and CMOS digital logic. The other statements describe either the opposite logic convention or transient thresholds, not how the logical true value is drawn on the line.

In positive-logic circuits, a logic 1 is represented by a high voltage level on the line. This “high level” is typically near the supply voltage, while a logic 0 is represented by a low level near ground. This convention is called active-high, and it’s standard for most TTL and CMOS digital logic. The other statements describe either the opposite logic convention or transient thresholds, not how the logical true value is drawn on the line.