IBM 1401

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IBM 1401

IBM's second successful commercial computer (the first was the 650). Introduced in 1959 and offered until 1971, the 1401 was an outstanding success. More than 12,000 systems were installed, and it was estimated that by the mid-1960s, half of the world's computers were 1401s.

The 1401 had 16KB of six-bit core memory and six tape drives. All input was on punch cards, and all output was printed or punched into blank cards. There was no display screen. In 1960, IBM introduced the larger 1410 with 80KB of memory, which also ran 1401 programs.

For migration later on, 1401 emulators were built into the System/360 series, IBM's first family of computers. Taken down for maintenance many hours a month while IBM service technicians cleaned and tested its innards, the 1401 was extremely reliable for its time.

Stand-Alone or a Peripheral
The 1401 was used as a stand-alone computer in many companies but was also used in large enterprises as an input/output peripheral to larger IBM computers. Equipped with card readers and card punch devices, the 1401 was often used in the datacenter to transfer cards to tape and print the results from the tapes after they were updated. For a personal story relating to the 1401, see software bloat. See IBM 701, IBM 650 and System/360.


IBM 1401
The 1401 was very successful. Its architecture and machine language were simple and straightforward. (Image courtesy of IBM.)
References in periodicals archive ?
JRFP International Trading and its customs broker, the bureau stressed, violated Sections 1400 and 1401 of the Republic Act 10863 or the CustomsModernization and Tariff Act (CMTA), in relation to Section 3 of RA 10845 otherwise known as "An Act Declaring Large-Scale Agricultural Smuggling as Economic Sabotage."
He immediately ordered the revocation of the customs accreditation of both the importer and the customs broker, who are facing charges of violation of section 1401 of the Customs Modernization and Tariff Act.
According to police sources, Karachi police conducted operations against criminals in different parts of the metropolis and arrested 70 absconders, four proclaimed offenders and 1401 street criminals.
Some 3048 personnel will perform duties in 1401 teams including 1180 mobile teams, 161 fixed teams and 123 transit teams.
Fallin vetoed House Bill 1401, which would have implemented the statutory changes for the policy.<br />The House bill received zero no votes on either chamber's floor, and residents will get to vote on the issue regardless of the veto, said the House author, state Rep.
Some 1401 teams have been constituted for the campaign which include 1103 mobile teams, 157 fixed teams, 141 transit teams for public transport centers and markets.
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The pendants are available in two designs MD 1401 and MD 1402 with an 18 carat gold chain.
Place: Eugene Area Chamber of Commerce, 1401 Willamette St., Eugene.
Colliers' Robert Listokin and Peyton Moore completed the transaction at the 106,413-square-foot building, which is located at 1401 NW 136th Avenue in Sunrise.