1130 Facts folder: IBM 1130 computing system

The following are excerpts from the text of an IBM General Systems Division brochure published in February 1975.

General Information

A stored-program computing system designed for use in engineering, research, management science, and business applications through a wide range of system configurations.

Solid-logic technology design techniques provide powerful processing capabilities in a compact, low-cost system.

Stored-program control including Boolean logic capabilities and double-precision arithmetic.

Fast access core storage with 16-bit words in blocks of 4096, 8192, 16,384, or 32,768 words.

High-speed parallel binary logic, with a choice of 2.2- or 3.6-microsecond core storage access.

All models of processors contain direct access disk storage capabilities ranging from 512,000 sixteen-bit words to 5,632,000 words. This is equivalent to from 1,024,000 bytes up to 11,264,000 bytes. Removable and interchangeable 2315 Disk Cartridges and 1316 Disk Packs provide practically unlimited storage of programs and data.

Automatic hardware interrupt system provides program-controlled monitoring of overlapping I/O functions.

Indirect addressing coupled with automatic indexing ability provides complete flexibility of programming.

Overlapped high-speed data transfer to core storage from direct access disk storage at 35,000 words per second, accomplished on a cycle-stealing basis concurrently with computing operations.

Flexible, high-speed card reading and punching.

Optical mark page reader for direct data entry from test or inventory documents.

High-quality printing through online 1132 Printer or 1403 Printer.
Low-cost paper tape input/output capabilities.

Built-in console with modified SELECTRIC ® typewriter output and flexible input keyboard for operator control.

Online X-Y plotter for graphic output recording.

Can be specially equipped for processing ledger cards.

Multi-mode data communications capabilities permit attachment of high-speed terminals and computer-to-computer communication.

Comprehensive library of programs and programming systems, including RPG, FORTRAN, COBOL and Assembler.

Built-in checking features ensure accuracy of internal functions and input/output operations.

Data and instruction formats identical to those of the IBM 1800 Data Acquisition and Control System, on a source level, permitting interchangeability of disk cartridges.