TTL is an example of a logic family in digital electronics. What does TTL stand for?

• A. Transistor-to-Transistor Logic
• B. Time-Triggered Logic
• C. Transfer-Through Logic
• D. Tri-state Logic

Answer: (A)

Transistor-Transistor Logic. It’s named this way because both the input and output stages of TTL gates are built with transistors, unlike earlier resistor-based designs. This transistor-focused structure gives faster switching and reliable noise margins. The other phrases aren’t related to what TTL stands for, they describe different concepts or features not used in the acronym.