WorksheetsEmbedded Systems Teaching Plan: Introduction
Total questions: 19
Worksheet time: 6mins
Which pattern tool is highlighted in basic LED work?
Binary search tree rotations
Hash map key-value lookups
Recursive depth-first traversal
For-loop iteration for sequences
A digital input pin reads a button. What are the two logical states?
OPEN or SHORT circuit faults
HIGH or LOW voltage levels
HOT or COLD temperature ranges
FAST or SLOW edge rates
Which beginner concept is specifically listed as understood by students?
Static analysis tooling
SPI DMA transactions
RTOS task scheduling
LED bar graph control
Which term best matches a binary input like a switch?
Analog waveform with amplitude
RF carrier with modulation
Digital signal with two states
Optical signal with spectrum
What is the primary behavior of a digital input?
Two discrete logic states
Continuously variable levels
Sinusoidal spectral content
Multi-bit parallel words
Which is an appropriate digital sensor for on/off detection?
Potentiometer variable resistor
Light-dependent analog resistor
Simple button or limit switch
Thermistor analog voltage level
Which early project is mentioned as prior knowledge?
LED bar graph animations
Cryptographic key exchange
Wireless BLE mesh networking
Motor vector control loops
Which project aligns with integrating basic sensors?
Button-controlled mode switching
Thermal camera calibration
FPGA bitstream synthesis
GHz RF front-end design
Which approach reads a switch with minimal noise issues?
Use high-frequency PWM
Sample at random intervals
Average analog conversions
Debounce and read digital state
Which statement about arrays in LED projects is accurate?
Arrays enable scalable pin management
Arrays eliminate need for resistors
Arrays replace timing functions entirely
Arrays are only for analog signals
Which student capability helps create LED bar graphs?
Writing RTOS mutex routines
Configuring Ethernet PHYs
Using arrays for LED pins
Tuning PID motor controllers
Which best describes a digital input's voltage behavior?
Transitions across thresholds
Smooth continuous variation
Sinusoidal harmonic content
Analog biasing linearity
Which basic LED concept is part of the starting point?
Multiprocessor cache coherency
Serial communication stacks
Vector control of motors
Blinking via simple timing
Which characteristic differentiates analog inputs from digital?
Fixed-width binary encoding
Edge-triggered transitions only
Two discrete state levels
Continuous range of values
When using INPUT_PULLUP on a button, what logic level does the pin read when the button is pressed in an active-low configuration?
HIGH because the pin floats to VCC
HIGH because debouncing forces a one
LOW because the internal pull-down engages
LOW because the pin is tied to ground
Choose the most appropriate software approach to stabilize a noisy button input without changing the wiring.
Reduce supply voltage to the microcontroller
Switch the pin mode to OUTPUT briefly
Increase the internal pull-up resistance
Implement debouncing using timing checks
In an active-low button circuit with INPUT_PULLUP, which wiring is correct for a single button controlling one LED?
Button floating, LED powered by pull-up
Button between pin and ground, LED on OUTPUT pin
Button between pin and VCC, LED on INPUT pin
Button on analog pin only, LED to ground
You need a button to cycle through LED patterns each time it is pressed. Which logic strategy will best avoid extra triggers from one press?
Level detection without any delay code
Edge detection with debounced state change
Interrupt on pin while ignoring bounce
Continuous polling of HIGH level only
A lab requires turning an LED ON when the button is pressed and OFF when released using INPUT_PULLUP. What is the simplest control rule?
If button pin is HIGH, toggle LED state
If button pin is LOW, set LED HIGH
If button pin is HIGH, set LED HIGH
If button pin is LOW, set LED LOW
