Computer Organization Architecture

Cache and main memory I/O interface Machine instructions and addressing modes Registers

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Computer Organization Architecture - Machine instructions and addressing modes

16: A certain processor supports only the immediate and the direct addressing modes. Which of the following programming language features cannot be implemented on this processor ?

A.	Pointers
B.	Arrays
C.	Records
D.	All of these
	Answer Report Discuss
	Option: D Explanation : Pointers require indirect addressing mode. Arrays and records required indexing modes.Recursive procedures with local variable required. Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

17: In the absolute addressing mode

A.	Operand is inside the instruction
B.	Address of the operand is outside the instruction
C.	Register containing the address of the operand is speciied inside theinstruction
D.	Location of the operand is implicit.
	Answer Report Discuss
	Option: D Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

18: The programmable interval timer is

A.	8251
B.	8250
C.	8253
D.	8088
	Answer Report Discuss
	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

19: Pseudo-instructions are

A.	Assembler directives
B.	Instructions in any program that have corresponding machine code instruction
C.	Instruction in any program whose absence will not change the output for any input
D.	None of these
	Answer Report Discuss
	Option: A Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

20: The number of instructions needed to add 'n' numbers and store the result in memory using only one address instructions is

A.	n
B.	n+1
C.	n-1
D.	independent of n
	Answer Report Discuss
	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments.. '>

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Computer Organization Architecture - Machine instructions and addressing modes

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