DECUS 18-bit Program Library Catalog Update Sep73

This document is the DECUS (Digital Equipment Computer Users Society) Program Library Catalog, an update from September 1973 to the March 1973 catalog. It lists and describes software programs primarily for PDP-7/9, PDP-9, and PDP-15 computer systems.

Key contents include:

• Program Listings: Programs are categorized by function (e.g., Programming Language, Text Editing, Debugging, Numerical Functions, Utilities, Display, Scientific Applications, Hardware Control, Games, Plotting, Maintenance). Separate numerical indexes are provided for PDP-9 and PDP-15 programs.
• Program Descriptions: For many programs, detailed information is provided, including minimum hardware requirements, other necessary programs, and source language.
• Service Charges and Ordering Information: Comprehensive sections outline the costs associated with obtaining programs (per write-up, paper tape, DECtape, LINCtape, or magtape) and the different media types available (user-supplied vs. DECUS-supplied certified tapes). Payment methods accepted include cash, DECUS Coupons, or Purchase Orders.
• Contact Information: A list of specific contacts at DECUS is provided for various inquiries such as accounting, program orders for different PDP models, and general library content.

Essentially, the document serves as a comprehensive guide for users to identify, learn about, and acquire available software from the DECUS library for their PDP systems in 1973.