COMPUTER SCIENCE AND ENGINEERING
COMPUTER ORGANIZATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Main or virtual memory
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Secondary memory
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Primary memory
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None of the above
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Detailed explanation-1: -2. What types of locations can hold source and destination operands? Main or virtual memory, processor register, immediate (contained in a field in the instruction being executed), and an I/O device.
Detailed explanation-2: -Memory operands are specified either by the name of a variable or by a register that contains the address of a variable. A variable name implies the address of a variable and instructs the computer to reference the contents of memory at that address.
Detailed explanation-3: -For instructions with two operands, the first (lefthand) operand is the source operand, and the second (righthand) operand is the destination operand (that is, source->destination). The Intel assembler uses the opposite order (destination<-source) for operands.
Detailed explanation-4: -Operands are entities operated upon by the instruction. Addresses are the locations in memory of specified data.