Microprocessor 8085 Architecture Quiz

What is the role of the stack pointer register in a microprocessor?

Works like a stack and is always incremented/decremented by 2 during push and pop operations

Which register holds the temporary data of arithmetic and logical operations in a microprocessor?

Temporary register

What is the purpose of the flag register in a microprocessor?

Stores 1-bit flip-flops depending upon the result stored in the accumulator

Which of the following signals is NOT categorized as a timing and control signal that controls external and internal circuits in a microprocessor?

RESET OUT Signup and view all the answers

What is the main function of the instruction decoder in a microprocessor?

Decodes the instructions present in the Instruction register Signup and view all the answers

When an interrupt occurs during the execution of a main program on a microprocessor, what action does the microprocessor take?

Shifts control from main program to process the incoming request Signup and view all the answers

What is the configuration of the 8085 microprocessor in terms of address bus and data bus?

16-bit address bus and 8-bit data bus Signup and view all the answers

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

To perform arithmetic, logical, I/O & LOAD/STORE operations Signup and view all the answers

Which functional unit of the 8085 microprocessor is responsible for performing arithmetic and logical operations on 8-bit data?

Arithmetic and logic unit Signup and view all the answers

How many general purpose registers are there in the 8085 microprocessor?

6 Signup and view all the answers

What is the function of the program counter in the 8085 microprocessor?

To hold the memory address of the next instruction to be executed Signup and view all the answers

Which pair of general purpose registers in the 8085 processor can hold 16-bit data?

D-E Signup and view all the answers

What are the 5 interrupt signals in 8085 microprocessor?

INTR, RST 7.5, RST 6.5, RST 5.5, TRAP Signup and view all the answers

Which instructions control the serial data communication in 8085 microprocessor?

SID and SOD Signup and view all the answers

What is loaded into the address buffer and address-data buffer to communicate with the CPU?

Content stored in the stack pointer and program counter Signup and view all the answers

How does the data bus differ from the address bus in 8085 architecture?

Data bus is bidirectional while address bus is unidirectional Signup and view all the answers

Which buses allow the CPU to exchange desired data with memory and I/O chips?

Memory and I/O chips are connected to address and data buses Signup and view all the answers