Operating System (OS)
When you start up the computer the boot up storage at which the BIOS versions manufacturer and data are displayed on the monitor is called

System configuration
Power on self test (POST)
Kernel loading
Bootstrap

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Operating System (OS)
The Register - to - Register (RR) instructions

All of these
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, except 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 leave the result in one of the registers.

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