Operating System (OS)
A real time operating system is most likely to be used for which of the following task?

Controlling access to a shared printer in a network
Ensuring that system clock works correctly on server
Controlling the fuel injection system of an automobile engines
Managing the access to system files in a laptop computers

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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.
None of these
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".
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
is a hardware memory device which denotes the location of the current instruction being executed.

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