IBM System/360 Model 22
{{Short description|Low-end IBM computer model from 1970s}}
{{Infobox computing device
| name = IBM System/360 Model 22
| title = IBM System/360 Model 22
| aka =
| logo = IBM Logo 1967-1972.svg
| logo_size = 120px
| image =
| caption = IBM System/360 Model 22
| developer =
| manufacturer = International Business Machines Corporation (IBM)
| family = System/360
| type =
| generation =
| releasedate = {{Start date|1970|04|07}}
| lifespan =
| price = $246,000 ($5,600/month)
(for the 24K model)
| discontinued = October 7, 1977
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| cpu =
| memory = 24 or 32K Core
| storage =
| memory card =
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| website = {{Official website|https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP2022.html}} IBM Archives
}}
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{{cite web|url=https://www.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP2030.html|title=IBM Archives: System/360 Model 30|website=IBM|date=23 January 2003|archive-url=https://web.archive.org/web/20230327055011/https://www.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP2030.html|archive-date=2023-03-27|url-status=dead}} withdrawal of the 360/30, and it lasted six and a half years, from April 7, 1971, to October 7, 1977.
=Comparisons=
| class="wikitable sortable" border="1"
!data-sort-type="number"| Model !data-sort-type="number"| Announced{{cite book |last=Pugh |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 |chapter-url=https://books.google.com/books?id=MFGj_PT_clIC&q=pugh+Appendix+A+%22system+introduction+dates%22&pg=PA643 }} !data-sort-type="number"| Scientific |title=Computer Speeds From Instruction Mixes - pre-1960 to 1971 |url=http://www.roylongbottom.org.uk/cpumix.htm#anchorIBM |last=Longbottom |first=Roy |access-date=October 12, 2014 }} except for M95 and M195. The latter based upon estimates of performance relative to M65 from Pugh. !data-sort-type="number"|Commercial !class="unsortable"|CPU |last = Padegs |first = A. |date = September 1981 |title = System/360 and Beyond |journal = IBM Journal of Research and Development |doi = 10.1147/rd.255.0377 |publisher = IBM |volume=25 |issue=5 |pages=377–390 }} !class="unsortable"|MemoryK=1,024 (model)Lower case "M" |
| 22
|data-sort-value="1971"|1971 |data-sort-value="1977"|1977 | 10 | 28 |1.3 |
| 25
|data-sort-value="1968"|1968 |data-sort-value="1977"|1977 | 9.7 | 25 |1.1 | 16, 24, 32, 48 |
| 30
|data-sort-value="1964"|1964 |data-sort-value="1970"|1970 | 10.2 | 29 |1.3 | 8 (C30), 16 (D30), 24 (DC30),Note: The DC30 was added in the second/FASTER iteration of the 360/30 |
| 40
|data-sort-value="1964"|1964 |data-sort-value=""1970"|1970 | 40 | 75 |3.2 | 16 (D40), 32 (E40), 64 (F40), |
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
{{Reflist|group='NB'}}