# 數碼電路

## 基礎

• 如果個訊號係模擬訊號（睇下面），個訊號嘅準確性實會（機率 = 100%）受影響；
• 相比之下，如果嗰個訊號係數碼訊號嘅話，個系統嘅設計者可以（例如）事先設定好部收訊號用嘅機械，叫部機跟「如果電壓值細過 ${\displaystyle V_{t}}$，就當個訊號係 0」同「如果電壓值大過 ${\displaystyle V_{t}}$，就當個訊號係 1」噉嘅規律行事；假想傳訊號嗰一刻，個訊號嘅可能數值分別係 ${\displaystyle V_{0}}$${\displaystyle V_{1}}$；理論上，如果 ${\displaystyle |V_{t}-V_{0}|}$${\displaystyle |V_{t}-V_{1}|}$ 呢個數值夠大，就算接收到嗰個訊號受干擾走咗樣，最後得到嘅資訊都唔受影響[11][12]

## 攷

1. Jain, R. P. (2003). Modern digital electronics. Tata McGraw-Hill Education.
2. Maini, A. K. (2007). Digital electronics: principles, devices and applications. John Wiley & Sons.
3. Robert K. Dueck. Digital Design with CPLD Applications and VHDL. "A digital representation can have only specific discrete values."
4. Analogue and Digital Communication Techniques. Archived from the original on 2017-12-17. "A digital signal is a complex waveform and can be defined as a discrete waveform having a finite set of levels."
5. Lee, J. I., Chang, I., Pradhan, A. S., Kim, J. L., Kim, B. H., & Chung, K. S. (2015). On the use of new generation mobile phone (smart phone) for retrospective accident dosimetry. Radiation Physics and Chemistry, 116, 151-154.
6. It's a-Me, Mario! Here to Teach You The Difference Between Analog and Digital 互聯網檔案館歸檔，歸檔日期2022年1月17號，.. Autodesk.
7. Robert K. Dueck. Digital Design with CPLD Applications and VHDL. "A digital representation can have only specific discrete values."
8. Analogue and Digital Communication Techniques. Archived from the original on 2017-12-17. "A digital signal is a complex waveform and can be defined as a discrete waveform having a finite set of levels."
9. Paul Horowitz; Winfield Hill (2015). The Art of Electronics. Cambridge University Press.
10. Proakis, John G.; Manolakis, Dimitris G. (2007-01-01). Digital Signal Processing. Pearson Prentice Hall.
11. Horowitz, Paul; Hill, Winfield (1989). The Art Of Electronics, 2nd Ed. Cambridge University Press. pp. 471-473.
12. Robert K. Dueck. Digital Design with CPLD Applications and VHDL. "A digital representation can have only specific discrete values."
13. Hoeschele, D. F. (1994). Analog-to-digital and digital-to-analog conversion techniques (Vol. 968). New York: Wiley.