1000+ Microprocessor GATE Questions with Answers Pdf - 1

Question: 1

While STC instruction executes

(A) only carry and zero flags will be affected

(B) only carry flag will be affected

(C) all flags will be affected

(D) no flags will be affected

Question: 2

The stack pointer register in a microprocessor

(A) holds the address of the top of the stack

(B) keeps the address of the next instruction to be fetched

(C) counts the number of instructions being executing on the microprocessor

(D) counts the number of programs being executing on the microprocessor

Question: 3

A mask programmed ROM is

(A) erasable electrically

(B) erasable and programmable

(C) programmed by the user

(D) programmed at the time of fabrication

Question: 4

The addressing mode in which the machine language instruction itself includes the data is called

(A) direct

(B) indirect

(C) indexed

(D) immediate

Question: 5

Every processor must necessarily have

(A) address bus, data bus and control bus

(B) data bus

(C) data bus and address bus

(D) control bus