Digital systems typically operate with how many stable logical states? Choose the standard count used in binary digital electronics.

Difficulty: Easy

Correct Answer: two states

Explanation:


Introduction / Context:
Binary digital electronics represent information using discrete logical levels. Understanding the number of fundamental states clarifies why Boolean algebra underpins digital design.


Given Data / Assumptions:

  • Binary systems map logic 0 and logic 1 to voltage or current ranges.
  • “Tri-state” or high-impedance refers to outputs, not additional logic values for computation.
  • Noise margins protect the two primary states.


Concept / Approach:
The standard digital system uses two stable logic states: LOW (0) and HIGH (1). While some devices can present a high-impedance output (for bus sharing), the underlying logic remains binary.


Step-by-Step Solution:

Identify logic representation: Boolean variables take 0 or 1.Map to physical levels: defined voltage ranges represent each state.Acknowledge tri-state outputs: not a third logic value for computation.Select “two states.”


Verification / Alternative check:
Boolean algebra, Karnaugh maps, and truth tables are all defined over two logic values, confirming the foundation is binary.


Why Other Options Are Wrong:

One state: cannot encode information.Three/four states: multi-valued logic exists in research, but mainstream digital hardware is binary.


Common Pitfalls:
Confusing output tri-state with a third logic level; misinterpreting analog intermediate voltages as valid logic values.


Final Answer:
two states

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