# UNIVAC 1102

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thumb|right|UNIVAC 1102
The '''UNIVAC 1102''' or '''ERA 1102''' was designed by [Engineering Research Associates](/source/Engineering_Research_Associates) for the [United States Air Force](/source/United_States_Air_Force)'s [Arnold Engineering Development Center](/source/Arnold_Engineering_Development_Center) in [Tullahoma, Tennessee](/source/Tullahoma%2C_Tennessee) in response to a request for proposal issued in 1950 {{Citation needed|date=October 2025}} and awarded to ERA in October of 1952.<ref name="Warren Burell">{{Cite web|url=https://vipclubmn.org/Articles/ERA1102.pdf |editor=Lowell Benson |author=Warren Burrell |title=ERA 1102 computer in service at AEDC from 1954-1966|website=VIP Club |issue=140 |date=May 2010 |department=Our Stories |access-date=2017-11-12}}</ref> The Air Force needed three computers to do data reduction for two [wind tunnel](/source/wind_tunnel)s and an engine test facility. 

The 1102 was a variant of the [UNIVAC 1101](/source/UNIVAC_1101), using its 24-bit word and a smaller (only 8,192 words) [drum memory](/source/drum_memory). The machine had 2,700 [vacuum tube](/source/vacuum_tube)s, weighed {{Convert|14000|lb|ST MT}}, and occupied {{Convert|122|sqft}} of floor area.<ref name="Warren Burell" />

The computers were connected to data channels coming from the wind tunnels and the engine facility. There were five [typewriter](/source/typewriter)s for printed output, five [paper tape punches](/source/punched_tape), and four [pen plotter](/source/Plotter_(printer))s to produce graphs.

The three computers and related peripherals were delivered between July 1954 and July 1956 at a total price of $1,400,000.<ref>{{Cite web|url=https://vipclubmn.org/Articles/ERA1102.pdf |editor=Lowell Benson |author=Warren Burrell |title=ERA 1102 computer in service at AEDC from 1954-1966|website=VIP Club |issue=140 |date=May 2010 |department=Our Stories |access-date=2017-11-12}}</ref> Software for the computers was developed entirely at the Arnold Engineering Development center. All programming was done in [machine code](/source/machine_code) ([assemblers](/source/Assembly_language) and [compiler](/source/compiler)s were never developed).

==See also==
*[List of UNIVAC products](/source/List_of_UNIVAC_products)
*[History of computing hardware](/source/History_of_computing_hardware)
*[List of vacuum-tube computers](/source/List_of_vacuum-tube_computers)

== References ==
{{Reflist}}

{{DEFAULTSORT:Univac 1102}}
1102
Category:24-bit computers
Category:Vacuum tube computers
Category:Military computers
Category:Computer-related introductions in 1953

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Adapted from the Wikipedia article [UNIVAC 1102](https://en.wikipedia.org/wiki/UNIVAC_1102) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/UNIVAC_1102?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.