АКС 91-120

What is the main difference between a microcontroller and a microprocessor?

• A microcontroller requires external memory and peripherals

• A microprocessor includes built-in memory and I/O ports

• A microcontroller integrates CPU, memory, and I/O on a single chip

• A microprocessor is designed for embedded systems

What is the purpose of a watchdog timer in a microcontroller?

• To improve power efficiency

• To increase clock speed

• To reset the system if it becomes unresponsive

• To manage multiple interrupt requests

Which type of memory is typically used for firmware storage in microcontrollers?

• SRAM

• DRAM

• Flash memory

• EEPROM

What is the function of GPIO pins in a microcontroller?

• They store program instructions

• They provide power to the microcontroller

• They allow input and output operations for peripherals

• They regulate CPU clock speed

What role does an ADC (Analog-to-Digital Converter) play in a microcontroller?

• It converts digital signals into analog

• It increases clock speed

• It allows the microcontroller to process analog inputs

• It improves RAM performance

What is the main function of a clock generator in a microcontroller?

• To store voltage levels

• To control memory access

• To synchronize and regulate instruction execution speed

• To amplify electrical signals

What is the primary purpose of a voltage regulator in an embedded system?

• To store excess energy

• To convert AC to DC

• To maintain a stable voltage for components

• To increase power efficiency

What is the role of pull-up and pull-down resistors in a circuit?

• To amplify signals

• To increase power supply efficiency

• To define default logic levels in input circuits

• To protect components from overheating

Why do microcontrollers often use quartz crystal oscillators?

• They provide additional processing power

• They reduce power consumption

• They generate a stable clock signal for precise timing

• They store firmware data

What is the purpose of a bus in a computer architecture?

• To provide additional processing power

• To store temporary data

• To transfer data between components efficiently

• To convert digital signals to analog