Digital — Science definition
Representation using discrete permitted symbols.
Where it is taught
- Waves, Information & a Speaker System — Waves, Sound & Light, Physical Science: Matter, Forces & Energy, Grade 8
Questions using digital
Problem 1
Does digital transmission prevent all error?
Answer and explanation
No. Noise can cause incorrect symbol decisions, especially near a threshold. Reliability depends on the system and code, not merely the digital label.
No. Noise can cause incorrect symbol decisions, especially near a threshold. Reliability depends on the system and code, not merely the digital label.
Response criteria
- Use the supplied conditions and relevant evidence.
- Explain the scientific mechanism or calculation.
- State a meaningful limitation or testable next step.
Problem 2
Evaluate and correct: A digital message cannot be corrupted.
Answer and explanation
Noise can cause a reading to cross the decision threshold; a code and receiver design influence error detection and reliability.
Noise can cause a reading to cross the decision threshold; a code and receiver design influence error detection and reliability.
Response criteria
- Use the supplied conditions and relevant evidence.
- Explain the scientific mechanism or calculation.
- State a meaningful limitation or testable next step.