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AP ECET ELECTRONICS AND COMMUNICATION ENGINEERING (ECE) Multiple Choice Questions (MCQs)

AP ECET ECE - Microcontrollers and Microprocessors MCQs

AP ECET ECE - Microcontrollers and Microprocessors MCQs (106-120)

106. The 8051 microcontroller is based on which type of architecture?

A) Harvard Architecture

B) Von Neumann Architecture

C) Modified Harvard Architecture

D) None of the above

Answer: C) Modified Harvard Architecture

107. Which of the following is the primary function of the accumulator in the 8051 microcontroller?

A) Store data

B) Perform arithmetic and logic operations

C) Control input/output devices

D) Control the clock frequency

Answer: B) Perform arithmetic and logic operations

108. Which instruction is used to perform a jump operation in 8051 assembly language?

A) JMP

B) JZ

C) CALL

D) JUMP

Answer: A) JMP

109. What is the size of the general-purpose registers in the 8051 microcontroller?

A) 8-bit

B) 16-bit

C) 32-bit

D) 4-bit

Answer: A) 8-bit

110. Which of the following is the correct instruction for time delay in 8051 assembly language?

A) NOP

B) MOV

C) DJNZ

D) CALL

Answer: C) DJNZ

111. Which 8051 register is used to store the address of the next instruction to be executed?

A) Program Counter (PC)

B) Stack Pointer (SP)

C) Data Pointer (DPTR)

D) Status Register

Answer: A) Program Counter (PC)

112. In 8051, how many I/O ports are available for interfacing with external devices?

A) 1

B) 2

C) 3

D) 4

Answer: B) 2

113. What is the word size of the 8086 microprocessor?

A) 8-bit

B) 16-bit

C) 32-bit

D) 64-bit

Answer: B) 16-bit

114. Which of the following is true about the 8086 microprocessor’s segmentation?

A) It supports two segments only

B) It uses a single segment for all operations

C) It supports 4 segments: code, data, stack, and extra

D) It does not support segmentation

Answer: C) It supports 4 segments: code, data, stack, and extra

115. What is the maximum addressable memory for the 8086 microprocessor?

A) 64 KB

B) 1 MB

C) 16 MB

D) 32 MB

Answer: B) 1 MB

116. Which instruction in the 8086 microprocessor is used for adding two numbers?

A) ADD

B) SUB

C) MOV

D) INC

Answer: A) ADD

117. Which is a feature of the Pentium processor?

A) Single-core architecture

B) Dual-core architecture

C) Multi-core architecture

D) No support for floating-point operations

Answer: B) Dual-core architecture

118. The 8086 microprocessor can operate in how many modes?

A) 1

B) 2

C) 3

D) 4

Answer: B) 2 (minimum mode and maximum mode)

119. The instruction `CALL` in 8086 is used to:

A) Jump to a specified location

B) Jump and save the return address

C) Add two numbers

D) Return from a subroutine

Answer: B) Jump and save the return address

120. The Pentium processor has a feature called “hyper-pipelining,” which means:

A) Multiple instructions are executed simultaneously in the pipeline

B) It can execute only one instruction at a time

C) It can execute multiple instructions in multiple pipelines

D) It uses only one pipeline for execution

Answer: A) Multiple instructions are executed simultaneously in the pipeline

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AP ECET ELECTRONICS AND COMMUNICATION ENGINEERING (ECE) Multiple Choice Questions (MCQs)

AP ECET ECE - Microcontrollers and Microprocessors MCQs (106-120)

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