Microcontroller and Embedded Systems Quiz

Which of the following best describes a microcontroller?

• A programmable logic device used for high-speed networking

• A single-chip system containing CPU, RAM, ROM, and peripherals

• A powerful processor with multi-core architecture for desktop systems

• A peripheral device that only manages memory and I/O ports

What makes Flash memory suitable for firmware updates in embedded systems?

• It operates only when power is off

• It stores data temporarily in volatile form

• It is non-volatile and electronically reprogrammable

• It erases memory only with ultraviolet light

Which type of microcontroller is typically used in toys or simple remote controls?

• 16-bit microcontrollers

• RISC microcontrollers

• 8-bit microcontrollers

• FPGA-based microcontrollers

What is the role of the Arithmetic Logic Unit (ALU) in a microprocessor?

• Controls external I/O operations

• Stores high-speed temporary data

• Handles logic and mathematical operations

• Interprets program instructions

Which memory type loses its contents when power is lost?

• Flash Memory

• EEPROM

• RAM

• ROM

Why are interrupts essential in embedded systems?

• They create precise delays in system processes

• They allow the system to respond immediately to urgent events

• They manage long-term program storage

• They process video signals for graphical displays

What distinguishes a RISC microcontroller from a CISC architecture?

• RISC executes fewer, simpler instructions more efficiently

• CISC uses less memory by simplifying circuits

• RISC systems are slower but cheaper

• CISC processors are better suited for robotics

Which component directly sends data to and from the CPU to peripherals?

• Address Bus

• Cache Memory

• Control Bus

• Data Bus

What is the main use of EEPROM in microcontrollers?

• Long-term data logging only

• Real-time signal processing

• Storing code that can be reprogrammed electronically

• Temporary storage of input data

In what type of embedded system would you most likely use a DSP microprocessor?

• A digital toy

• A basic temperature sensor

• An audio processing device

• A robotic arm with mechanical switches