Language Processors
Multiprogramming was made possible by

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

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

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Language Processors
A self-relocating program is one which

can itself perform the relocation of its address-sensitive portions
All of these
consists of a program and relevant information for its relocation
cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation

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