$1.$ Explain the following concepts and the differences and similarities if exist:

$$ Translator, compiler, interpreter.

$$ High$-$level program, low$-$level program, Assembly program, machine level

program.

$$ Directive, instruction, operating system service.

$$ Function, Macro, Interrupt Service routine.

$$ Instruction, Macroinstruction, and microinstruction.

$$ Immediate, Direct, indirect, and register indirect addressing modes.