About: IBM System/360 Model 20

Facets (new session)
Description
Metadata
Settings
- Rule:
- Inverse Functional Properties:
- "Same As":

About: IBM System/360 Model 20 Goto Sponge NotDistinct Permalink

An Entity of Type : wikidata:Q1067263, within Data Space : el.dbpedia.org associated with source document(s)

The IBM System/360 Model 20 is the smallest member of the IBM System/360 family announced in November 1964. The Model 20 supports only a subset of the System/360 instruction set, with binary numbers limited to 16 bits and no floating point. In later years it would have been classified as a 16-bit minicomputer rather than a mainframe, but the term "minicomputer" was not current, and in any case IBM wanted to emphasize the compatibility of the Model 20 rather than its differences from the rest of the System/360 line. It does, however, have the full System/360 decimal instruction set, that allows for addition, subtraction, product, and dividend of up to 31 decimal digits.

Attributes	Values
rdf:type	Thing device information appliance person wikidata:Q1067263
rdfs:label	IBM System/360 Model 20 (en)
rdfs:comment	The IBM System/360 Model 20 is the smallest member of the IBM System/360 family announced in November 1964. The Model 20 supports only a subset of the System/360 instruction set, with binary numbers limited to 16 bits and no floating point. In later years it would have been classified as a 16-bit minicomputer rather than a mainframe, but the term "minicomputer" was not current, and in any case IBM wanted to emphasize the compatibility of the Model 20 rather than its differences from the rest of the System/360 line. It does, however, have the full System/360 decimal instruction set, that allows for addition, subtraction, product, and dividend of up to 31 decimal digits. (en)
sameAs	IBM System/360 Model 20
dbp:wikiPageUsesTemplate	dbt:Infobox_information_appliance dbt:Reflist dbt:Rp dbt:Short_description dbt:Start_date dbt:IBM_System/360_line
Subject	IBM System/360 mainframe line 16-bit computers Remote job entry
thumbnail	wiki-commons:Special:FilePath/IBM_Logo_1956_1972.svg?width=300
foaf:depiction
gold:hypernym	Member
prov:wasDerivedFrom	http://en.wikipedia.org/wiki/IBM_System/360_Model_20?oldid=1062586328&ns=0
Wikipage page ID	37303298 (xsd:integer)
page length (characters) of wiki page	18418 (xsd:nonNegativeInteger)
Wikipage revision ID	1062586328 (xsd:integer)
Link from a Wikipage to another Wikipage	Magnetic tape data storage Processor register Unit record equipment Addressing mode Binary-coded decimal Binary Synchronous Communications Booting Buckinghamshire Böblingen Fred Brooks Germany IBM System/360 mainframe line Disk pack Disk sector History of IBM magnetic disk drives Mainframe computer Mainframe sort merge PL/I Channel I/O Creslow Park Cycle stealing Cylinder-head-sector Linker (computing) Punched card input/output Punched card sorter Computer operator EBay John Haanstra Minicomputer Electronic data processing IBM IBM 1130 IBM 1401 IBM 1403 IBM 1442 IBM 2501 IBM 2922 IBM Basic Assembly Language and successors IBM RPG IBM System/360 Peripheral Synchronous transmit-receive Deutsches Museum Input/Output Control System Interpreter (computing) Track (disk drive) Transformer read-only storage UNIVAC 9000 series 16-bit computers Memory management (operating systems) Remote job entry Munich dbr:IBM_1419 dbr:IBM_2203 dbr:IBM_2415 dbr:IBM_2520
manufacturer	IBM
has abstract	The IBM System/360 Model 20 is the smallest member of the IBM System/360 family announced in November 1964. The Model 20 supports only a subset of the System/360 instruction set, with binary numbers limited to 16 bits and no floating point. In later years it would have been classified as a 16-bit minicomputer rather than a mainframe, but the term "minicomputer" was not current, and in any case IBM wanted to emphasize the compatibility of the Model 20 rather than its differences from the rest of the System/360 line. It does, however, have the full System/360 decimal instruction set, that allows for addition, subtraction, product, and dividend of up to 31 decimal digits. Developed by IBM in Böblingen, Germany, the system was intended for data processing and as a replacement for tab equipment. An incompatible small computer, the IBM 1130 introduced the following year, was designed for scientific and engineering computing. The design of the Model 20 was the result of a tug of war within IBM. John Haanstra had wanted a low-end machine that could execute IBM 1401 instructions. Fred Brooks wanted the machine to have System/360 architecture. The final result was a compromise where cost concerns predominated: the system leased for under $2000 per month including and line printer, compared to around $3000 for a comparable 1401. Based on number of systems sold the Model 20 was the most successful model of System/360. According to Pugh "The number of Model 20 processors installed by the end of 1970 in the United States exceeded 7,400." Other models, however, brought in greater revenue. Despite their popularity there are relatively few Model 20s in existence in working condition in 2020. (en)
foaf:isPrimaryTopicOf	http://en.wikipedia.org/wiki/IBM_System/360_Model_20
is Wikipage redirect of	IBM 2020 IBM 2560 IBM System/360 model 20
is Link from a Wikipage to another Wikipage of	History of IBM History of IBM magnetic disk drives History of IBM mainframe operating systems Creslow Park Houston Automatic Spooling Priority List of IBM products IBM 1442 IBM 2245 IBM 2501

Faceted Search & Find service v1.17_git151 as of Feb 20 2025

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3240 as of Nov 11 2024, on Linux (x86_64-ubuntu_focal-linux-gnu), Single-Server Edition (71 GB total memory, 990 MB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2025 OpenLink Software