Microprocessor
When referring to instruction words, a mnemonic is

 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.
 shorthand for machine language.

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Microprocessor
In 8085 microprocessor system with memory mapped I/O, which of the following is true?

 Arithmetic and logic operations can be directly performed with the I/O data
 Devices are accessed using IN and OUT instructions
 Devices have 8-bit address line
 There can be maximum of 256 input devices and 256 output devices

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