Operating System (OS)
The Storage-to-Storage instructions

have both their operands in the main store.
which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, expect in the case of store operation when it is also
None of these
which perform indicated operations on two fast registers of the machine and have the result in one of the registers
All of these

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Operating System (OS)
Which of the following is not true about documentation?

Documentation, of a system, should be as clear and direct as possible
Documentation gives better understanding of the problem
Documentation increases the maintenance time and cost
None of these
All of these

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