IBM 1620 User Manual

Contents
Part 1 - Introduction to IBM FORTRAN ................................... 5
Part 2 - Writing the 1620 FORTRAN Program ............................ 11
The FORTRAN Coding Form ............................................ 11
Constants and Variables .............................................. 14
Arithmetic Statements
................................................ 18
Control Statell1ents ................................................... 22
Input/Output Statements .............................................. 32
Specification Statements ............................................... 34
A
FORTRAN Problem .................................................. 44
Part 3 - Operating Principles ............................................. 51
Producing
the Object Program ......................................... 51
Execution of
the Object Program ....... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 55
Part 4 - Analysis of the FORTRAN Program .............................. 58
Part 5 - The FORTRAN Pre-Compiler Program ............................ 72
Operation of the .Pre-Compiler Program ................................. 72
Processing
with the Pre-Compiler Program ............................... 77
Appendix A - Summary of the 1620 FORTRAN Statements .............. 80
Appendix B - Summary of 1620 Operating Principles .................... 83
Index
......................................................................................................................................
106

IBM 1620 Specifications

General

Brand	IBM
Model	1620
Category	Desktop
Language	English