Language Processors
Advantage(s) of using assembly language rather than machine language is/are:

All of these
Addresses any symbolic, not absolute
Introduction of data to program is easier
It is mnemonic and easy to read

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Language Processors
A compiler is

program that accepts a program written in a high level language and produces an object program
is a program that appears to execute a source program as if it were machine language
a program that places programs into memory and prepares them for execution
a program that automate the translation of assembly language into machine language

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Language Processors
Assembly code data base is associated with

a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
assembly language version of the program which is created by the code generation phase and is input to the assembly phase
a permanent table which lists all key words and special symbols of the language in symbolic form
consists of a full or partial list or the tokens as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation

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Language Processors
In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with

recognition of basic elements and creation of uniform symbols
use of macro processor to produce more optimal assembly code
creation of more optional matrix
recognition of basic syntactic constructs through reductions

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