Quiz 1 - NMJ21704

The register used to store memory address location of the next instruction to be executed is called....

• flags

• address register

• program counter

• accumulator

Which is the following will be done in an 8085 microprocessor when an instruction LXI H 2070 L is executed?.

• 70 H is loaded in H register and 20 H will loaded in L register

• Content of the memory of 2070H is loaded in H register

• 20 H is loaded in H register and 70 H is loaded in L register

• 2070H is loaded in H register

In a microprocessor, the address of the next instruction to next executed, is sorted in

• Stack Pointer

• Address latch

• Program counter

• General purpose register

How many bit Program Counter is available in 8085?

• 8 bit

• 16 bit

• 32 bit

• 4 bit

What is the maximum address capability of Intel 8085?

• 64 KB

• 1 MB

• 4 KB

• 32 KB

The main purpose of Accumulator register of 8085 is

• temporary data storage

• selection of peripheral

• storing instructions

• used as primary pointer

In a microprocessor, the term 'pipelining' refers to ..

• address decoding

• memory writes

• fetching the next instruction while the current instruction is executed

• virtual memory address

The microprocessor of a computer can operate on any information if it is present in ..... only

• Program counter

• Flag

• Main memory

• Secondary memory

Which of the following is NOT TRUE about the address bus?

• It consists of control PIN 21 to 28

• It is bidirectional bus

• It is 16 bits in lenght

• Lower address bus lines (AD₀ - AD₇) are called "Line Number"

Which of the following is the correct sequence of operations in a microprocessor?

• Opcode fetch, memory read, memory write, I/O read, I/O write

• Opcode fetch, memory write, memory read, I/O read, I/O write

• I/O read, opcode fetch, memory read, memory write, I/O write

• I/O read, opcode fetch, memory write, memory read, I/O write