2.10. MISC

  1. What is GSM  and GPS module and which module used  and what are sensors and how to interface.[Analogics Jan-2026]
  2. Write about what features you see before buy a RTOS.[Analogics Jan-2026]
  3.  Where the vector table will store. [Analogics jan-2026]
  4.  how many peripherals are used. [Analogics Jan-2026]
  5. Where does startup code located in microcontroller.[AMD Dec-2026]
  6. How many pins a GPIO contains .[AMD Dec-2026]
  7. Why you have used 3 different GPIO ports ? why can’t with one GPIO .[AMD Dec-2026]
  8. What is the use of Watchdog timer [AMD Dec-2026]
  9. what happen if you get low voltage to MC
  10. Which interrupt has least priority ?
  11. Which is non volatile memory in MC ?
  12. explain about how you configure your LCD with STM32 ? how data will send to LCD[AMD Dec-2025]
  13. how many characters stored in LCD? how to differentiate data and command[AMD Dec-2025]
  14. What is DHT11 sensor.[Vem Feb-2026]
  15. Explain about special function registers.[Vem Feb-2026]
  16. How did you convert 84MHZ to 16MHZ.[Vem Feb-2026]
  17. Write C program to toggle Led with 10ms delay using timer interrupt.[Fervid Dec-2025]
  18. Write C program to when push-button press toggle Led using STM32 controller delay 5 seconds assume using HAL programming. Initialize and configure.[Fervid Dec-2025]
  19. Given ADC (12-bit resonance) raw is 2600 @3.3V. Calculate voltage step-by-step.[Fervid Dec-2025]
  20. Printf() is used in Bare Metal? why?[AMD 11-Feb-2026]
  21. How do you identify errors in code ?[AMD 11-Feb-2026]
  22. What is the difference  between Bluetooth and WIFI, what are ranges.
  23. What is Transformer and types of modes. [ Fervid Smart Solutions Pvt. Ltd]
  24. Write Embedded C code on initializes WIFI with ARDUINO and print data “hello world”. [ Fervid Smart Solutions Pvt. Ltd]
  25. How data store in SIM. [ Fervid Smart Solutions Pvt. Ltd]
  26. How data pass to server [ Fervid Smart Solutions Pvt. Ltd]
  27. why you are using the EEPROM? [ Fervid Smart Solutions Pvt. Ltd]
  28. what is meant by Rectifier ? [ Fervid Smart Solutions Pvt. Ltd]
  29. Draw the circuit diagram of Bridge Rectifier ?[ Fervid Smart Solutions Pvt. Ltd]
  30. what is meant by transistor and difference between BJT and FET ? [ Fervid Smart Solutions Pvt. Ltd]
  31. What is the difference between RISC and CISC architectures?[ Fervid Smart Solutions Pvt. Ltd]
  32. Explain the difference between Von Neumann and Harvard architectures.[ Fervid Smart Solutions Pvt. Ltd]
  33. What is the size of a pointer in 32-bit and 64-bit architectures, and why does it differ?[ Fervid Smart Solutions Pvt. Ltd]
  34. How does a clock cycle work in a processor, and how much time does one clock cycle take?[ Fervid Smart Solutions Pvt. Ltd]
  35. Do you know PSEN enable.? [Hyundai Mobi’s]
  36. Do you have an idea on integrated testing? [Hyundai Mobi’s]
  37. Define Little Endian & Big Endian and What is the difference b/w them [Hyundai Mobi’s]
  38. What is a kernel, what is the use kernel? [INFOBELL]
  39. do you know about device drivers [Johnson Control][Quanint Techsoft]
  40. how to find CPU load? [Johnson Control]
  41. how to switch from user space to kernel space [Johnson Control]
  42. how to find the remaining space in ram.[Johnson Control]
  43. which IDE you used for your project. [Kernex Micro Systems]
  44. explain about dock light and tera term [Kernex Micro Systems]
  45. What are the scheduling algorithms? [Mirafra Technologies Pvt. Ltd.]
  46. Which scheduling algorithm is used in mobile phones? [Mirafra Technologies Pvt. Ltd.]
  47. Which debugger do you prefer: JTAG or ST-Link? [Pentagon Rugged Systems Private Limited]
  48. What is the purpose of Tera Term in your project? [Pentagon Rugged Systems Private Limited]
  49. what is push and pop?
  50. What is FreeRTOS? Explain. [Quanint Techsoft / Webber / XBattery]
  51. Difference between RTOS and GPOS. [XBattery / Webber]
  52. Use of RTOS. [Webber]
  53. How to create a task in FreeRTOS? [Webber]
  54. If there are no tasks in the program after the scheduler starts, what will happen? [Webber]
  55. Mention practical examples of Hard Real-Time Systems. [Quanint Techsoft]
  56. Which mechanism does the stack follow in Embedded Systems? [Quanint Techsoft]
  57. What is device driver? Steps to add LM35 driver to the system. [Quanint Techsoft]
  58. What is the location of LM35 after adding the driver? [Quanint Techsoft]
  59. What are major number and minor number? [Quanint Techsoft]
  60. What is the difference between BareMetal programming and HAL layer programming? [Sanguine Inno Tech]
  61. What type of registers are used in Embedded C? [Tenacity]
  62. What types of steps do you take before starting a project? [Tenacity]
  63. What is the overall process of writing an embedded C program from start to end? [Tenacity]
  64. If you buy some RTOS, what features will you look for? [VoltyIOT]
  65. What is the use of the volatile keyword in your project? [VEM Technology]
  66. How is the STM32CubeIDE used for configuring peripherals? [VoltyIOT]
  67. What is STLink Debugger? How is it used for debugging? [VoltyIOT]
  68. What is DOCKLIGHT? [XBattery]
  69. If two tasks — one high-priority (delayed) and one low-priority (faster) — how would you handle this situation? [XBattery]
  70. What is socket programming? In which mode did you establish the connection? [Sanguine Inno Tech]
  71. What is the Raayanmini board? [VEM Technology]
  72. What is a decoder? Why is it used? [Sanguine Inno Tech]
  73. Explain about your B.Tech project — Piezo electric sensor, bridge rectifier, boost converter, capacitor. [Rayden]
  74. Explain how weight sensor, pressure sensor, optical sensor work for a static water bottle problem. [Rayden]
  75. Explain how the LDR sensor works. [Tenacity]
  76. Draw the circuit diagram for LDR sensor. [Tenacity]
  77. How the capacitor works in the circuit. [Tenacity]
  78. How much voltage will you get from the LDR? [Tenacity]
  79. Explain about brushless motors. [Rayden]
  80. About GPS Module and series name. About GSM Module and series name. [Rayden]
  81. About sensors in general. [Rayden]
  82. What is cache memory? How many levels? Why do we need it? [TeraScale]
  83. Do you know about cache flush? [TeraScale]
  84. What is a BSP (Board Support Package)? [TeraScale]
  85. What is an LDD (Linux Device Driver)? [TeraScale]
  86. Where does the code get stored after dumping on the board? From where does program execution start? (Exact file name) [TeraScale]