Microprocessor
A mask programmed ROM is

 programmed at the time of fabrication
 erasable electrically
 programmed by the user
 erasable and programmable

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Microprocessor
When referring to instruction words, a mnemonic is

 shorthand for machine language.
 a short abbreviation for the operand address.
 a short abbreviation for the operation to be performed.
 a short abbreviation for the data word stored at the operand address.

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