Embedded Software Intern Interview Questions and Answers

To test a light bulb in a series, check voltage across each bulb or use a multimeter to isolate and test each one.

• Use a multimeter to measure voltage across each bulb.

• If one bulb is out, the circuit may be broken; check each bulb individually.

• Disconnect bulbs one by one to identify the faulty one.

• Replace the suspected faulty bulb with a known working bulb to see if the circuit completes.

Assigning a char to an integer in embedded C promotes the char to an int, preserving its value.

• 1. Implicit Type Promotion: A char (typically 1 byte) is promoted to an int (typically 4 bytes) when assigned.

• 2. Value Preservation: The numeric value of the char is preserved during the assignment.

• 3. Example: If char c = 'A'; then int i = c; results in i being 65 (ASCII value of 'A').

• 4. Range Consideration: Ensure the char value is within the range of the int type to avoid unexpect...read more