e-con Systems Firmware Engineer Interview Questions and Answers

Q1. About your domain and work
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I dont remember details clearly

Q1. C concepts and Experience
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Q1. Self questions about your self
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Q1. Introduction and questions based on your projects
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Q1. Tell me something about yourself
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Q2. What is spi communication
Ans. 
SPI (Serial Peripheral Interface) is a synchronous serial communication protocol used for short distance communication.
• SPI is used to communicate between microcontrollers, sensors, and other peripherals.

• It uses a master-slave architecture where the master device initiates the communication.

• SPI uses four wires: MOSI (Master Out Slave In), MISO (Master In Slave Out), SCK (Serial Clock), and SS (Slave Select).

• SPI is faste...read more
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Normal aptitude question

Q1. Which language you like?
Ans. 
I prefer C++ for its performance and versatility.
• C++ is known for its high performance and efficiency.

• C++ is a versatile language that can be used for a wide range of applications.

• C++ allows for low-level memory manipulation, making it suitable for embedded systems.

• Examples: Developing firmware for microcontrollers, implementing real-time systems.
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Q2. Why c is faster than java or python
Ans. 
C is faster than Java or Python due to its lower-level nature and direct hardware access.
• C is a low-level language that allows for direct memory manipulation and hardware access, resulting in faster performance.

• Java and Python are higher-level languages with more abstractions, leading to slower execution compared to C.

• C code is compiled directly to machine code, while Java and Python code are typically interpreted or r...read more
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Q3. Reverse string ?
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Some basic c questions