Embedded Systems multiple choice questions with answers Pdf

Are you a student or professional in the field of embedded systems, currently preparing for an exam? If so, you have come to the right place! In this article, we will provide you with a valuable resource: an Embedded Systems multiple choice questions with answers PDF.

Whether you are looking to test your knowledge or simply want to enhance your understanding of this intricate subject, these questions and their corresponding answers will prove beneficial. So, let’s delve into the world of embedded systems and empower ourselves with comprehensive exam preparation materials.

Top 75 Embedded Systems multiple choice questions with answers

1. An embedded system can be defined as a control system or computer system designed to perform a specific task. (True or False ?)
Ans. True

2. PDAs stands for ___.
Ans. Personal Digital Assistants

3. An embedded system has ___ main components which are embedded in it.
Ans. Three

4. A ___ is defined as a system whose correctness depends on the timeliness of its response.
Ans. Real-Time system

5. A ___ is a single-chip CPU.
Ans. Microprocessor

6. Most embedded computing systems are designed by small teams on tight deadlines. (True or False)
Ans. True

7. The ___ includes the bus and I/O devices.
Ans. Platform

8. A system is said to be real-time if the ___ time is critical.
Ans. Response

9. WAN stands for ___.
Ans. Wide Area Network

10. ___ guarantee responses to each event within a defined amount of time.
Ans. Real-Time Operating Systems

11. In ___, we create a more detailed description of what we want.
Ans. specification

12. The ___ of the system is often a major consideration both for the usability of the system and for its ultimate cost.
Ans. speed

13. The architectural description tells us what components we need. (True or False ?)
Ans. True

14. ___ are typically found during system integration.
Ans. Bugs

15. UML stands for ___.
Ans. Unified Modeling Language

16. An object includes a set of ___ that define its internal state.
Ans. attributes

17. ___ describes a complex object made of smaller objects.
Ans. Aggregation

18. A ___ is an asynchronous occurrence.
Ans. Signal

19. A ___ is the heart of the embedded system.
Ans. processor

20. ASIP stands for ___.
Ans. Application-Specific Instruction Set Processor

21. 8051 is the first microcontroller of the MCS-51 family introduced by ___ at the end of the 1970s.
Ans. Intel Corporation

22. The 8051 is an ___ bit machine.
Ans. 8

23. The Bit Memory space is used for storing bit variables and flags. (True or False?)
Ans. True

24. The maximum size of the External Data Memory space is ___ bytes.
Ans. 64K

25. All ports of 8051 (ie.,P0, P1, P2 and P3) are unidirectional. (True or False?)
Ans. False

26. 8051 has two ___ programmable UP timers/counters Timer 0 and timer 1.
Ans. 16-bit

27. Timer Mode-2 is ___ Mode
Ans. SCON, PCON

28. The register ___ controls data communication and register ___ controls data rates.

29. In which mode, the serial port functions as a standard Universal Asynchronous Receiver Transmitter (UART) mode.
Ans. mode-1

30. The external interrupt flags are cleared on branching to ___.
Ans. Interrupt Service Routine (ISR)

31. In the CPU, ___ are used to store information temporarily.
Ans. registers

32. DPTR and the program counter (PC) are ___ bit registers.
Ans. 16

33. The ADD instruction tells the CPU to add the source byte to register A and put the result in ___.
Ans. register A

34. A program that consists of 0s and 1s is called ___.
Ans. machine language

35. Assembly language programs must be translated into machine code by a program called an ___.
Ans. assembler

36. The “asm” file is also called the source file. (True or False)
Ans. True

37. When the CPU fetches the opcode from the program ROM, the program counter is ___ to point to the next instruction.
Ans. Incremented

38. The ___ directive is used to define the 8-bit data.
Ans. DB

39. The ___ directive is used to indicate the beginning of the address.
Ans. ORG

40. The flag register in the 8051 is called the ___ register.
Ans. program status word (PSW)