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IBM 1400 series - Wikipedia
The IBM 1400 series are second-generation (transistor) mid-range business decimal computers that IBM marketed in the early 1960s. The computers were offered to replace tabulating machines like the IBM 407. The 1400-series machines stored information in magnetic cores as variable-length character … See more
IBM provided several models compatible (or nearly so) with the 1401.
• 1460 is twice as fast, and many special features of 1401 were … See moreProgramming languages for the 1400 series included Symbolic Programming System (SPS, an assembly language), Autocoder (a … See more
• Many IBM 1400 series manuals are online (pdf files) at http://bitsavers.org/pdf/ibm/1410/. See more
With the 1400 series, the smallest addressable unit in core-storage is called a character. The 1400 stores alphameric characters internally in binary-coded decimal (BCD) form, spanning six bits called BA8421. When the character is an operation code or is … See more
The 1400 series was replaced by System/360 and, later, by low-end machines like the IBM System/3, System/32, System/34, System/36, System/38, … See more
Wikipedia text under CC-BY-SA license IBM 1440 - Wikiwand
IBM 1440 Data Processing System | IT History Society
Executive Guide to the IBM 1440 Data Processing …
Executive Guide to the IBM 1440 Data Processing System. Company: International Business Machines Corporation (IBM) Publication: U.S. Date: 1962. Subjects: promotional materials ; International Business Machines Corporation …
History of IBM magnetic disk drives - Wikipedia
The first drive attached to a system is a "master drive" which contains the controller and can control a number of Model 2 "slave drives." [ 34 ] Master drive on an IBM 1440, IBM 1460, or IBM 1240 system and can control up to four …
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