Junior Embedded Engineer Interview Questions and Answers

8-bit microcontrollers have smaller data and address buses, limited memory, and lower processing power compared to 32-bit microcontrollers.

• 8-bit microcontrollers have a data bus width of 8 bits, while 32-bit microcontrollers have a data bus width of 32 bits.

• 8-bit microcontrollers typically have limited memory capacity, while 32-bit microcontrollers can support larger memory sizes.

• 32-bit microcontrollers have a higher processing power and can execute instructions faster than 8...read more

I would rate myself 7 out of 10 for PCB Design. I have experience with designing PCBs for various projects.

• I have successfully designed PCBs for projects during my academic and professional experience.

• I am familiar with PCB design software such as Altium Designer and Eagle.

• I have a good understanding of PCB layout, routing, and component placement.

• I continuously strive to improve my skills in PCB design through learning and practice.

Yes, I am capable of performing schematics and generating gerber files with a rating above 5.

• I have experience in using software like Altium Designer or Eagle for schematic design and PCB layout.

• I am familiar with generating gerber files for manufacturing PCBs.

• I have a strong understanding of PCB design principles and best practices.

• I have successfully completed projects where the rating of my schematics and gerber files was above 5.

I am proficient in communication protocols such as UART, SPI, I2C, and CAN.

• Experienced in implementing UART, SPI, I2C, and CAN protocols in embedded systems

• Knowledge of protocol specifications and communication standards

• Troubleshooting and debugging communication issues

• Collaborating with hardware and software teams to ensure proper protocol implementation

Step-down transformer, rectifier, and voltage regulator are used to convert 230V to 5V for microcontroller.

• Use a step-down transformer to reduce voltage from 230V to a lower level.

• Rectify the AC voltage using a rectifier circuit to convert it into DC.

• Use a voltage regulator such as LM7805 to regulate the voltage to a stable 5V.

• Filter the output using capacitors to remove any noise or fluctuations.

• Ensure proper grounding and isolation for safety and reliability.

• Example: Using ...read more

Bootloader is a program that loads the operating system into the computer's memory during the boot process.

• Bootloader is the first piece of software run when a computer is powered on.

• It initializes the hardware and loads the operating system into memory.

• Bootloaders can be specific to the hardware architecture, such as U-Boot for ARM processors.

• Bootloaders can also provide options for booting different operating systems or recovery modes.

A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).

• Converts AC to DC

• Used in power supplies

• Types include half-wave, full-wave, and bridge rectifiers