Understanding the 8085 Microprocessor

What is the word length of the 8085 microprocessor?

• 4 bits

• 16 bits

• 8 bits

• 32 bits

How many address lines does the 8085 have?

• 32

• 8

• 16

• 64

What is the maximum memory addressable by the 8085?

• 32 KB

• 128 KB

• 256 KB

• 65536 bytes (64 KB)

Which register in the 8085 is used to hold the address of the next instruction?

• Program Counter (PC)

• Instruction Register (IR)

• Stack Pointer (SP)

• Accumulator (ACC)

What is the function of the ALU in the 8085 microprocessor?

• The ALU stores data in memory.

• The ALU manages input and output devices.

• The ALU controls the flow of the program.

• The ALU performs arithmetic and logical operations.

How many 8-bit registers are there in the 8085?

• 10

• 8

• 4

• 6

What is the purpose of the stack in the 8085 microprocessor?

• To execute arithmetic operations directly.

• To manage input/output devices.

• To store temporary data and manage function calls.

• To permanently store data for the CPU.

Which instruction is used to halt the operation of the 8085?

• STOP

• HLT

• PAUSE

• END

What is the role of the control unit in the 8085?

• The control unit directs the operation of the 8085 microprocessor by fetching, decoding instructions, and generating control signals.

• The control unit stores data temporarily for processing.

• The control unit performs arithmetic operations directly.

• The control unit manages the power supply of the microprocessor.

What type of architecture does the 8085 microprocessor use?

• 16-bit architecture

• 64-bit architecture

• 32-bit architecture

• 8-bit architecture