4.1 Digital Signals4.2 Digital Systems4.3 Linear and Time-Invariant Systems4.4 The -Transform and Its Inverse4.5 The -Transform and LTI Systems4.6 Application I: Acquiring Digital Signals from the Microcontroller, Processing Offline Data4.7 Application II: Acquiring Digital Signals from the Microcontroller, Processing Real-Time Data4.8 SummaryProblems