Overview of Digital SignalsBinary RepresentationHexadecimal NotationBit WidthSigned NumbersFloating Point NumbersBringing it TogetherPhysical Communication LayersKnowledge Check

Digital Signals Overview

What are Digital Signals?

Key Characteristics

  • Represent data using discrete values (0s and 1s)
  • Binary encoding ensures reliability
  • Resistant to noise and interference
  • Enable long-distance data transmission

Applications

  • Telecommunications systems
  • Computer processing and storage
  • Digital audio and video
  • Internet and network communications

Digital vs Analog Signals

Digital SignalAnalog SignalDiscrete Values (0s and 1s)Continuous Values

Digital signals have revolutionized modern technology by enabling reliable data processing and communication. Unlike analog signals that vary continuously, digital signals use discrete values to represent information, making them more robust and easier to process.

Modern Digital Systems

DigitalProcessor📡Sensors1 0 1 1 0💾Storage1 0 1 1 0🖥️Display1 0 1 1 0🌐Network1 0 1 1 0

System Components

  • Digital Processor: Central processing unit
  • Peripheral Devices: Input/Output components
  • Digital Signals: Binary data transmission
  • Connections: Bidirectional data flow

Impact on Modern Technology

🌐

Communication

Enables global data networks and internet connectivity

🎮

Media

Powers digital audio, video, and interactive content

💻

Computing

Facilitates data processing and storage in computers

Binary Data Representation

Binary Data Stream10110010Voltage Representation5V0V0μs1μs2μs3μs4μs5μs6μs7μsLogic HIGH (1)Logic LOW (0)Clock Period: 1μs (1MHz)

Key Concepts

  • Binary data is represented using two states: HIGH (1) and LOW (0)
  • Each bit occupies one clock cycle
  • Voltage levels typically use 0V for LOW and 3.3V/5V for HIGH
  • Clean transitions between states reduce noise and improve reliability