Language Processors
The Process Manager has to keep track of:

the priority of each program
both (a) and (b)
the status of each program
the information management support to a programmer using the system

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Language Processors
Assembler is

a 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 automate the translation of assembly language into machine language
a program that places programs into memory and prepares them for execution

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

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

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