IBM 1620 User Manual

The symbols to be used are explained below:
•
Direction of Flow Program Step
<>OCJ
Decision
Stop
Input-Output
The Direction of Flow symbol simply shows the relationship between symbols.
The example shows that A is executed first, then B.
The Input/Output symbol is used to refer to any operation that involves an
input/ output device.
Read
a
Card
The Program symbol is used to represent any steps in the prograrn which
are not represented
by special symbols.
Compute
A = B+C
Increase Pay
Number
by I
Find
Average
Temperature
The Decision symbol represents any logical decision that is contained in the
program.
The Stop symbol is used to indicate the end of the program.
Writing the 1620 FORTRAN Program 45

IBM 1620 Specifications

General

Brand	IBM
Model	1620
Category	Desktop
Language	English