Department of Computer Engineering, School of Engineering, Federal
Polytechnic Ilaro. Microprocessor in Control and Instrumentation, CTE 421
Test-Assignment
Instruction: Answer all questions, and submit by 4:45pm
1. Assuming subsection of a microcontroller-based system is presented as shown in Figure 1
below and calculate the power and energy expelled in 4.7KΩ resistor, using Kirchhoff’s
approach.
2. State Norton’s theorem, and show the network equivalence of Nortonized and Thevenined
network of Figure 1. Hence, determine the load current and power of 1KΩ resistor.
3. Assuming 2.2KΩ resistor is replaced with the correct value 2.7Ω resistor from Figure 1,
determine the voltage dropped across 3.3KΩ resistor, and current flowing through 1KΩ
resistor. What is the percentage error of the calculated current?
Figure 1
4. State any likely and frequently occurrence problematic related issues with an arduino-based
system of your choice, and demonstrate your professionalism as a well-rooted student of
Computer Engineering department. Also, state necessary steps to troubleshoot a
microcontroller-based system, and list any ten dissimilarities between microcontroller and
microprocessor. Hence, demonstrate how to you code to use ultrasonic sensor to replace
motion detector sensor and let the result be displayed on an LCD. Show all necessary diagrams,
algorithms, flowchart, and codes.