Language Processors
Multiprogramming was made possible by

both (a) and (b)
input/output units that operate independently of the CPU
operating systems
neither (a) nor (b)

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Language Processors
Assembly code data base is associated with

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
assembly language version of the program which is created by the code generation phase and is input to the assembly phase
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure

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Language Processors
Bug means

A logical error in a program
Documenting programs using an efficient documentation tool
All of these
A difficult syntax error in a program

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Language Processors
In analyzing the compilation of PL/I program, the term "Syntax analysis" is associated with

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

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