COA

Which of the register/s of the processor is/are connected to Memory Bus ?

• PC

• MAR

• IR

• Both a and b

The addressing mode, where you directly specify the operand value is _______

• Direct

• Immediate

• Definite

• Relative

In Reverse Polish notation, expression A*B+C*D is written as

• AB*CD*+

• A*BCD*+

• AB*CD+*

• A*B*CD+

During the execution of a program which gets initialized first ?

• MDR

• MAR

• IR

• PC

CISC stands for,

• Complete Instruction Sequential Compilation

• Computer Integrated Sequential Compiler

• Complex Instruction Set Computer

• None

The circuit used to store one bit of data is known as

• Register

• Encoder

• Decoder

• Flip Flop

A Stack-organised Computer uses instruction of

• Indirect addressing

• Two-addressing

• Zero addressing

• Index addressing

In computers, subtraction is carried out generally by

• 1's complement method

• 2's complement method

• signed magnitude method

• BCD subtraction method

PSW is saved in stack when there is a

• interrupt recognized

• execution of RST instruction

• Execution of CALL instruction

• All of these

The BSA instruction is

• Branch and store accumulator

• Branch and save return address

• Branch and shift address

• Branch and show accumulator