Assembly language

Question 1

Define opcode

Answer 1

Mnemonics for what the instruction does
Things its doing

Question 2

Define operand

Answer 2

The data/input that instruction uses
Thing being done

Question 3

What can instructions do

Answer 3

Very little:
Move data around
Simple arithmetical and logical operations
Simple branching

Question 4

Define immediate addressing

Answer 4

Data is hard-coded into instruction.
The number itself

Question 5

Define direct addressing

Answer 5

Address in the main memory where data is being fetched from
The memory location

Question 6

What takes longer immediate or direct

Answer 6

Direct will take longer as main memory needs to be accessed