Topic: Digital Electronics
When transistors are used in digital circuits they usually operate in the
- A. Active region
- B. Breakdown region
- C. Saturation and cut-off regions
- D. Linear region
Answer: C. Saturation and cut-off regions
Explanation: Transistors used in digital circuits operate primarily as switches. Therefore, they operate in the saturation region (representing logic level 'ON' or 0/1 depending on the logic family) and the cut-off region (representing logic level 'OFF').