Accenture Embedded Software Engineer Interview Questions and Answers

Q1. What is basic of c
Ans. 
Basics of C include syntax, data types, variables, functions, and control structures.
• C is a procedural programming language

• Variables must be declared before use

• Functions are blocks of code that perform a specific task

• Control structures include if-else, loops, and switch-case

• Data types in C include int, float, char, etc.
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Q2. What is basic of embedded
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Embedded systems are specialized computing systems designed to perform specific tasks within a larger system.
• Embedded systems are typically designed to be small, efficient, and reliable.

• They often have limited resources such as memory, processing power, and energy.

• Examples of embedded systems include microcontrollers in household appliances, automotive control systems, and industrial automation.

• Embedded software is spe...read more
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Q3. What is basic of contoller
Ans. 
The basic of a controller is to manage and regulate the operation of a system or device.
• Controllers receive input signals and process them to generate output signals.

• They can be programmed to perform specific tasks or functions.

• Examples include microcontrollers, PLCs, and PID controllers.
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Q1. What is difference between Normal OS and RTOS? What is difference between microcontroller and microprocessor? Write a C program to swap two numbers without using 3rd variable.
Ans. 
RTOS is a real-time operating system designed for time-sensitive applications. Microcontrollers are integrated circuits with built-in memory and peripherals.
• RTOS is designed to provide deterministic and predictable response times for critical tasks.

• Normal OS is designed for general-purpose computing and may not prioritize real-time tasks.

• Microcontrollers are typically used in embedded systems and have limited resources...read more
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Q2. What is storage class in C?
Ans. 
Storage class in C determines the scope, visibility, and lifetime of variables.
• C has four storage classes: auto, register, static, and extern.

• Auto storage class is the default and is used for local variables.

• Register storage class is used for variables that should be stored in CPU registers for faster access.

• Static storage class is used for variables that retain their values between function calls.

• Extern storage class ...read more
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Q3. What is difference between macro and constant variable in C? How to divide a number without using division operator?
Ans. 
A macro is a preprocessor directive that is replaced by its value before compilation, while a constant variable is a read-only variable.
• Macros are defined using the #define directive, while constant variables are declared using the const keyword.

• Macros are replaced by their values during preprocessing, while constant variables are stored in memory.

• Macros can lead to code duplication, while constant variables provide ty...read more
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Percentage, speed, series, logical abulity, differnces

Q1. C programs, protocols, Embedded C, pointers
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Q2. Strings swapping nibbles using c
Ans. 
Swapping nibbles of strings in C
• Use bitwise operations to swap the nibbles of each character in the string

• Iterate through each character in the string and swap the nibbles

• Ensure to handle edge cases like strings with odd length or non-hex characters
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Q3. I2c, can, spi, uart
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Q1. Normal hr questions
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Q2. Self, company details
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Online c programming test using online tool

Q1. Manager level round - explain about project and area of difficulty in embedded. Which one we work and fix issue
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Q1. Discuss about offer letter
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Very basic c questions like an array

Q1. Bitwise operators
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Q2. RTOS conecpts questions
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Q1. Asked regarding programs
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Q2. Asked regarding questions of memory structure
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Q3. What is Compilation process
Ans. 
Compilation process is the process of converting source code into machine code by a compiler.
• Source code is written in a high-level programming language

• Compiler translates the source code into assembly code

• Assembler converts the assembly code into machine code

• Final executable file is generated
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Including reasoning and relationship

Virtual round with a specific topic

Basic level of coding

Q1. What are storage classes
Ans. 
Storage classes in C define the scope and lifetime of variables.
• Storage classes include auto, register, static, extern, and typedef.

• Auto variables are local to the block they are declared in.

• Register variables are stored in CPU registers for faster access.

• Static variables retain their value between function calls.

• Extern variables are declared in one file and can be used in another file.

• Typedef is used to create new dat
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Q2. What is use of device drivers
Ans. 
Device drivers are software programs that allow the operating system to communicate with hardware devices.
• Device drivers act as a translator between the hardware device and the operating system.

• They provide a standardized interface for the operating system to interact with different types of hardware devices.

• Device drivers help improve system stability and performance by enabling efficient communication between hardwar...read more
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Q3. How do you copy files from and device to other
Ans. 
You can copy files from one device to another by using file transfer protocols like FTP, SCP, or by physically transferring the files via USB or external storage devices.
• Use FTP (File Transfer Protocol) to transfer files over a network

• Use SCP (Secure Copy Protocol) for secure file transfers

• Physically transfer files by connecting devices via USB or using external storage devices like USB drives or SD cards
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Q4. Bit mask operation
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Q5. Swapping without 3 rd variable
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Swapping two variables without using a third variable
• Use XOR operation: a = a ^ b; b = a ^ b; a = a ^ b;

• Use addition and subtraction: a = a + b; b = a - b; a = a - b;

• Use multiplication and division: a = a * b; b = a / b; a = a / b;
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