Thinkify Labs Embedded Developer Interview Questions, Process, and Tips

Q1. Basic question from my Resume and Work/Projects
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Q2. Technical Question : Stackoverflow, Queue, Virtual Class/Keyword, Pointers, Linked List
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Q3. Memory Stack, Local/Glabal/Staic Variable stored where?
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Q4. Direct Memory Access, Heap, Stack, Dyanamic Memory Allocation, memory Segmentation fault
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Q5. Difference between Timer and counters?
Ans. 
Timers are used to measure time intervals, while counters are used to count events or occurrences.
• Timers are typically used for generating delays, measuring time intervals, or triggering events at specific times.

• Counters are used to count external events, such as pulses or interrupts.

• Timers can be used to implement software delays, while counters can be used for tasks like frequency measurement.

• Examples: A timer can be...read more
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Q1. What difference between Microprocessor and Micro controller?
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Microprocessor is a standalone CPU while microcontroller has CPU, memory, and peripherals on a single chip.
• Microprocessor is used in applications where processing power is the main requirement, like computers.

• Microcontroller is used in embedded systems where space, power, and cost are constraints, like in IoT devices.

• Microprocessors require external components like memory and peripherals, while microcontrollers have th...read more
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Q2. Talk about communication protocol such as I2C, UART, SPI? Which is faster and how
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Q3. Stack memory in microcontroller
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Stack memory in microcontrollers is used for storing local variables, function parameters, return addresses, and other temporary data during program execution.
• Stack memory is a limited resource in microcontrollers and is typically smaller than heap memory.

• Stack memory is managed automatically by the compiler and is organized as a LIFO (Last In, First Out) data structure.

• Accessing stack memory is faster than accessing h...read more
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Q4. What's use the use of Static keywords
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Static keyword is used to declare variables and functions that are only accessible within the file they are declared in.
• Static variables retain their value between function calls

• Static functions can only be called within the file they are declared in

• Static variables in functions are initialized only once
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Q5. Bit manipulation programming questions
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Q1. SPI, I2C, etc communication protocol
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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
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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. Programing language
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Syllabus based question

Q1. Introduction, education
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Q1. Mainly focused on basics of c language Stack program
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Q2. Compilation stages , function
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