Operating System (OS)
In analyzing the compilation of PL/I program, the description "creation of more optimal matrix" is associated with

None of these
Syntax analysis
Machine independent optimization
Code generation
Assembly and output

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Operating System (OS)
The instruction register

contains the address of the memory location that is to be read from or stored into.
contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
None of these
is a hardware memory device which denotes the location of the current instruction being executed.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.

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Operating System (OS)
Daisy chain is a device for

connecting a number of devices to a controller
connecting a number of controllers to a device
All of these
interconnecting a number of devices to a number of controllers
None of these

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