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IBM 1401 Programming Systems   By:

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Transcriber's Note

On page 3 "Left" was changed to "Page 2" because of the e text format. On pages 5 and 8 a registered symbol is represented by ^[registered].

IBM 1401 Programming Systems

P PR PRO SYSTEMS PROG YSTEMS PROGR STEMS PROGRA TEMS PROGRAM EMS PROGRAMM MS PROGRAMMI S PROGRAMMIN PROGRAMMING

[Illustration]

When companies order an IBM 1401 Data Processing System, methods programming staffs are given the responsibility of translating the requirements of management into finished applications. 1401 Programming Systems are helping cut the costs of getting the computer into operation by simplifying and expediting the work of these methods staffs.

Modern, high speed computers, such as the 1401, are marvelous electronic instruments, but they represent only portions of data processing systems. Well tested programming languages for communication with computers must accompany the systems. It is through these languages that the computer itself is used to perform many of the tedious functions that the programmer would otherwise have to perform. A few minutes of computer time in translating the program can be equal to many, many hours of staff time in writing instructions coded in the language of the computer.

The combination of a modern computer plus modern programming languages is the key to profitable data processing. This brochure explains modern IBM Programming Languages and their significance to management.

Page 2: Here an operator points to machine language instructions for a new application being generated by the 1401 system on the 1403 high speed printer. Statements about the application which were written by the programmer are being translated internally to machine coded language.

"=What Is A 1401 Program?="

A program is a series of instructions that direct the 1401 as it solves an application.

"=What Is A Stored Program Machine?="

A stored program machine is one which stores its own instructions in magnetic form and is capable of acting on those instructions to complete the application assigned. The 1401 uses a stored program.

"=What Are 1401 Programming Systems?="

There are two types: (1) Systems that provide the programmer with a simplified vocabulary of statements to use in writing programs, and (2) Pre written programs, which take care of many of the everyday operations of the 1401.

=What 1401 Programming Systems Mean To Management:=

INCREASED PROGRAMMING EFFICIENCY

Programmers can concentrate on the application and results rather than on a multitude of "bookkeeping" functions, such as keeping track of storage locations.

FASTER TRANSLATION OF MANAGEMENT REQUIREMENTS INTO USABLE RESULTS

Simplified programming routines allow programmers to write more instructions in less time.

SHORTER TRAINING PERIODS

Programmers use a language more familiar to them rather than having to learn detailed machine codes.

REDUCED PROGRAMMING COSTS

Many pre written programs are supplied by IBM, eliminating necessity of customers' staffs writing their own.

MORE AVAILABLE 1401 TIME

Pre written programs have already been tested by IBM, reducing tedious checking operations on the computer.

EASIER TO UNDERSTAND PROGRAMS

Programs are written in symbolic or application oriented form instead of computer language. This enables management to communicate more easily with the programming staff.

FASTER REPORTS ON OPERATIONS

Routines such as those designed for report writing permit faster translation of management requirements into usable information.

IBM Programming Systems:

Symbolic Programming Systems

These systems permit programs to be written using meaningful names (symbols) rather than actual machine language.

Autocoder

This is an advanced symbolic programming system. It allows generation of multiple machine instructions from one source statement, free form coding, and an automatic assembly process through magnetic tape.

COBOL

COBOL is a problem oriented programming language for commercial applications... Continue reading book >>






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