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IBM System/360 Model 22

Low-end IBM computer model from 1970s

Summary

Low-end IBM computer model from 1970s

Field	Value
name	IBM System/360 Model 22
title	IBM System/360 Model 22
logo	IBM Logo 1967-1972.svg
logo_size	120px
caption	IBM System/360 Model 22
manufacturer	International Business Machines Corporation (IBM)
family	System/360
releasedate
price	$246,000 ($5,600/month)
(for the 24K model)
discontinued	October 7, 1977
memory	24 or 32K Core
website	IBM Archives

(for the 24K model)

The IBM System/360 Model 22 was an IBM mainframe from the System/360 line.

History

The Model 22 was a cut-down (economy) versionIBM description: "... small-system economy. It provided an economical way for users to..." of the Model 30 computer, aimed at bolstering the low end of the range.

The 360/22 was announced less than a year after the June 22, 1970 withdrawal of the 360/30, and it lasted six and a half years, from April 7, 1971, to October 7, 1977.

Comparisons

Model	Announced{{cite book	Withdrawn	Scientific
performance
(kIPS)Performance calculated (not measured) based on a mix of instructions typical of scientific applications ("Gibson Mix") with the results in kilo Instructions Per Second (kIPS) per {{cite web	Commercial
performance
(kIPS)using commercial instruction mix ("ADP Mix")	CPU
Bandwidth
(MB/sec){{cite journal	MemoryK=1,024 (model)Lower case "M"
display-authors=etal	first=Emerson	title=IBM's 360 and Early 370 Systems	year=1991	publisher=MIT	chapter=Appendix A - System Introduction Dates 1964-1977	isbn=9780262161237
22	1971	1977	10	28	1.3	24, 32
25	1968	1977	9.7	25	1.1	16, 24, 32, 48
30	1964	1970	10.2	29	1.3	8 (C30), 16 (D30), 24 (DC30),Note: The DC30 was added in the second/FASTER
40	1964	1970	40	75	3.2	16 (D40), 32 (E40), 64 (F40),
128 (G40), 256 (H40)

Models

Only 2 models were offered: 24K or 32K of memory.by comparison, the initial offering of the 360/30 included FOUR models: 8K, 16K, 32K, 64K

Notes

References

(23 January 2003). "IBM Archives: System/360 Model 30".
(23 January 2003). "System/360 Dates and characteristics".
(23 January 2003). "System/360 Model 22".

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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