Which term describes the logic convention where a high voltage represents 1 and a low voltage represents 0?

Which term describes the logic convention where a high voltage represents 1 and a low voltage represents 0?

• A. Clock Pulse
• B. Negative Logic
• C. Truth Table
• D. Positive Logic

Answer: (D)

High voltage representing 1 and low voltage representing 0 is the convention called positive logic. In positive logic, a higher potential is interpreted as a true or “1” state, while a lower potential is the false or “0” state. This is standard in most digital circuits, like TTL and CMOS, making the “signal is on” condition correspond to a high level. The opposite mapping is negative logic, where a high level means 0 and a low level means 1—this is used in some specialized cases or for active-low signals. A clock pulse is about timing, not how a single signal is decoded as 0 or 1. A truth table shows how inputs relate to outputs for a logic function, rather than how voltage levels map to binary values.

High voltage representing 1 and low voltage representing 0 is the convention called positive logic. In positive logic, a higher potential is interpreted as a true or “1” state, while a lower potential is the false or “0” state. This is standard in most digital circuits, like TTL and CMOS, making the “signal is on” condition correspond to a high level.

The opposite mapping is negative logic, where a high level means 0 and a low level means 1—this is used in some specialized cases or for active-low signals. A clock pulse is about timing, not how a single signal is decoded as 0 or 1. A truth table shows how inputs relate to outputs for a logic function, rather than how voltage levels map to binary values.