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Topic Notes · Easy summaries with diagrams
Chapter 3 — Chapter 3 — Digital Systems and Logic Design
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📘Easy summary
Analog signal: continuous, can take any value in a range (sound waves, temperature, old radio). Digital signal: discrete, only two levels 0 (low/off) and 1 (high/on). Digital systems are less affected by noise, easy to store/process/copy, and are used in computers. Digital logic is based on binary values and logic operations.
⭐Key points
- Digital = discrete 0/1.
🔬Diagram
🌿Real-life example
Mercury thermometer (analog) vs digital thermometer.
💡Exam tip
- Give examples.
✅Quick check
1. Digital signal values:
2. Analog example:
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