Jan 28, 2023  
2021-2022 Undergraduate Academic Catalog 
2021-2022 Undergraduate Academic Catalog [ARCHIVED CATALOG]

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CE 3101 - Digital Electronics and Computer Interfacing

3 lecture hours 2 lab hours 4 credits
Course Description
Digital electronics are diode and transistor circuits that operate on digital signals. This course introduces the design and analysis of diode circuits, BJT circuits, and MOSFET circuits with a focus on digital logic families. It also examines electronic circuits commonly used to interface sensors or actuators to the computer. Interfacing topics include analog-to-digital signal conditioning using operational amplifiers, digital-to-analog conversion using standard solid-state components, and large-signal biasing of BJT and MOSFET drivers. (prereq: EE 2050 )
Course Learning Outcomes
Upon successful completion of this course, the student will be able to:
  • Analyze and design circuits using first, second, and third approximation diode models
  • Analyze and design BJT logic circuits
  • Analyze and design NMOS and CMOS logic circuits
  • Describe, use, and mix the standard 7400, 74LS00, 74HC00, and CD4000 logic families
  • Design, simulate, and test signal conditioning circuits and filters used to interface analog sensors to a computer
  • Design simulate, and test interface circuits for small and large DC loads

Prerequisites by Topic
  • Basic circuit elements including resistance, inductance, capacitance, as well as current and voltage sources
  • Circuit analysis techniques including Ohm’s Law, Kirchoff’s laws, nodal analysis, and power calculation
  • Ideal op-amp terminal characteristics

Course Topics
  • Physical structure of the diode, BJT, and MOSFET semiconductor devices 
  • I-V characteristics of the diode, BJT, and MOSFET semiconductor devices 
  • Nodal and mesh analysis with diode, BJT, and MOSFET approximation models 
  • Resistor-transistor logic gates (RTL)
  • Transistor-transistor logic gates (TTL)
  • MOSFET depletion mode logic gates (NMOS)
  • Complementary MOSFET logic gates (CMOS) 
  • Electrical and timing characteristics of standard 7400 and CD4000 logic families
  • Operational amplifier circuits for inverting, non-inverting, summation, and difference
  • Linear mapping of sensor output to analog-to-digital converter input envelope  
  • First and second order operational amplifier circuits for low-pass, high-pass, and bandpass filtering. 
  • Buffer, transistor, and opto-isolation models for small and large DC loads. 
  • PSPICE for semiconductor circuit simulation

Laboratory Topics
  • Simulate, instrument, and measure semiconductor device characteristics
  • Design, simulate, instrument, and measure logic gates fabricated using discrete semiconductor components. 
  • Design, simulate, instrument, and measure analog sensor signal conditioning circuits. 
  • Design, simulate, instrument, and measure buffer, transistor, and opto-isolator circuits for interfacing small and large DC loads to a computer.

Dr. Russ Meier

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