Large Systems Product Summary Jul81

This document is a "Product Summary" from Digital Equipment Corporation's (DEC) Large Computer Group (LCG), published in July 1981. It serves as a comprehensive catalog providing concise descriptions of the DECsystem-10 and DECSYSTEM-20 series, their options, configurators, and rules.

The catalog is divided into five main sections:

1. DECsystem-10 and DECSYSTEM-20 Systems & Options: This section details various models (e.g., DECsystem-1090, DECsystem-1091, DECSYSTEM-2020, DECSYSTEM-2040/2060), covering basic system packages, license-only packages, and symmetrical multi-processing (SMP) upgrades. It lists core hardware components such as central processors (KL10, KS10), memory modules (MH10, MF20, MS10), disk and tape controllers (RH20, RTP20, TX02), add-on disk pack drives (RP06, RP20, RM03), magnetic tape subsystems (TU77, TU72), various line printers (LP100, LP20, Charaband), card and paper tape equipment, and universal data communications front ends (DN20, DN200) with their synchronous and asynchronous line interfaces.
2. Configurators & Rules: This section provides detailed guidelines and diagrams for configuring valid systems, including core configurators for specific models, memory configuration rules, and communication front-end configurators, outlining line speed and capacity constraints.
3. Terminals: Descriptions of supported terminals like the DF01-A Acoustic Coupler, LA38 DECwriter IV, LA120 hardcopy terminal, and VT100 video display terminal, including their features and connectivity options.
4. Software: Information on how to order software and services for TOPS-10 and TOPS-20 operating systems. This covers optional packages for SMP, various communications software (DECnet, IBM 2780/3780/HASP), programming languages (FORTRAN, ALGOL, BASIC, COBOL, APL, CPL, BLISS), database management, license upgrades, support services, and source code policies.
5. Additional Equipment & Information: This section details communication cabling specifications (e.g., Massbus, channel cables, null modem cables) for DC20, DN20, DZ11, RTP20 Disk System, and TU72 Series Magnetic Tape configurations, along with miscellaneous options.

Overall, the document serves as an essential guide for understanding, configuring, and ordering DEC's large computer systems, their associated hardware, software, and services as offered in mid-1981.