Chapter 2. Information Processing; Input, Process, And Output - IBM 5110 User Manual

Chapter 2. I nfonnation Processing
This chapter presents an approach to dissecting an application so that
APL user-defined functions can be used to help process the
information. This approach helps you break down the application into
manageable parts so that you can apply APL expressions and
commands to process the information. Breaking the application down
into manageable parts promotes thoroughness and allows the
application to be solved (programmed) faster.
INPUT, PROCESS, AND OUTPUT
Every application consists of three parts:
• The
input
required for processing.
• The
process
(APL expressions) required to generate the final result
• The
output,
which is the final result
Each part might consist·of one or more APL expressions. In the
following sections, each part is discussed in more detail. Also, an
example for finding the
compound interest
is used to illustrate each
part.
Information Processing 5