Operating System (OS)
Which of the following is not a characteristic of a daisy chaining priority control scheme?

priority is programmable
it is relatively easy to add more devices to the chain
None of these
the number of control lines is independent of the number of devices on the chain
the failure of one device may affect other devices on the chain

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Operating System (OS)
The instruction register

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

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