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| Computer Manufacturers Database 
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| Logo | Manufacturer
    | Models | Origin | Est. | Ended | Production | Type | Info 1 | Info 2 | 
| U | |||||||||
|  | U Dengshi Technology Co., Ltd.  | CHN | 2009 | act. | 00's - 10's | PC | - |  | |
|  | U R There International | Amigo | USA | 1996 |  | 00's | PC | - |  | 
|  | U-Force Technology Co., Ltd. | CHN | 2003 | act. | 10's | PC | - |  | |
|  | U-Microcomputers Ltd. | 2 models | UK | 1979 |  | 80's | PC | - |  | 
|  | U-Touch Technology Co., Ltd.  | MX | CHN | - | act. | 00's - 10's | PC | - |  | 
| U-Tron Technology, Inc. | USA | - | () | 90's | PC | - |  | ||
|  | U. Klotz | MCS-40 | GER | - |  | 70's | PC | - |  | 
| U.S. Air Force - Patrick Air Force Base  | FLAC | USA | 1950 |  | 50's - 60's | SC, MF | - |  | |
|  | U.S. Computer Direct Corp. | PC comp., (+9) | USA | - | () | 90's | PC | - |  | 
| U.S. Design Corp. | MicroVIP | USA | - | () | 80's | PC | - |  | |
|  | U.S. Express, Inc. | PC comp. | USA | - | () | 90's | PC | - | - | 
| U.S. Integrated Technologies Ltd. (USIT) | PC comp. | USA | - | () | 90's | PC | - |  | |
| U.S. Micro Engineering Ltd. | PC comp. | USA | - | () | 90's | PC | - |  | |
| U.S. Micro Express, Inc. | PC comp., (+57) | USA | - | () | 90's | PC | - |  | |
|  | U.S. Micro Sales | 1 models | USA | - | () | 80's | PC | - |  | 
| U.S. Microsystems | USA | - | () | 90's | PC | - |  | ||
| U.S. Microtel | RMC-4000 | USA | - | () | 90's | PC | - |  | |
|  | U.S. Robotics, Inc. (USR)  | USR-1600P, (+5) | USA | 1976 | () | 80's - 90's | PC |  |  | 
|  | U.S. Systems & Technologies, inc. | PC comp. | USA | - | () | 90's | PC | - |  | 
|  | Uberclock | PC comp. | USA | - | act. | 00's | PC | - |  | 
| UBM Computer | PC comp. | ? | - | () | 00's | PC | - | - | |
|  | UCERD Private Pvt. Ltd. | PAK | - | act. | 00's | SU | - |  | |
|  | Uchida-Yoko Co., Ltd.  | USAC, (+55) | JAP | 1910 | act. | 60's - 80's | PC, MC |  |  | 
|  | Uchishiba Seisakusho, Inc. | Mac clone | JAP | - | () | 90's | PC | - |  | 
|  | Udoo  | 1 models | ITA | - | act. | 00's | PC | - |  | 
| UDS | PC comp., (+3) | ? | - | () | 90's | PC | - |  | |
|  | Uerro Industrial Co., Ltd. | PC comp. | TWN | 1977 |  | 80's | PC | - |  | 
|  | UFO Computer Co., Ltd. | PC comp. | TWN | - | () | 80's | PC | - |  | 
|  | Ugoos Industrial Co., Ltd. | UTS3 | CHN | - | act. | 00's - 10's | PC | - |  | 
|  | UHappy Technology Co., Ltd. | CHN | 2009 |  | 00's - 10's | PC | - |  | |
|  | Uj Kalász MGTSZ | RAAB 84, (+7) | HUN | - | () | 80's | PC, TER | - |  | 
| Ulbrich Automation GmbH | Microterminal, (+5) | GER | - | () | 70's | PC, TER | - |  | |
| ULC Computers Ltd. | PC comp. | ? | - | () | 90's | PC | - |  | |
|  | Ullenboom & Fischer GbR | GER | - | () | 80's | PC | - |  | |
| Ulta Computers | PC comp., (+7) | USA | - | () | 90's | PC | - |  | |
| Ultec Computer Corp. | 2 models | CAN | 1980 |  | 80's | PC | - |  | |
|  | Ultima Electronics Corp. | PC comp. | TWN | - | () | 80's - 90's | PC | - |  | 
|  | Ultimacc Systems, Inc. | ULTIMACC, (+10) | USA | 1968 |  | 70's | MC | - |  | 
|  | Ultimate Computer Corp.  | 27 models | USA | 1978 |  | 80's | MC, PC | - |  | 
|  | Ultinet Computer Corp. | PC comp. | CAN | 1984 | 2006 | 90's - 00's | PC | - | - | 
|  | Ultra | PC comp., (+6) | ? | - |  | 90's | PC | - |  | 
| Ultra Business Machines Pvt. Ltd.  | IND | 1981 | () | 80's | MC, PC, SU | - | - | ||
|  | Ultra Computer Company Ltd. | PC comp. | NZL | 1986 |  | 80's - 90's | PC | - |  | 
| Ultra Computers Ltd. | PC comp., (+2) | UK | - | () | 90's | PC | - |  | |
|  | ULTRA Electronics | PC comp. | RUS | - | act. | 00's | PC | - |  | 
|  | Ultra Electronics Precision Air & Land Systems (PALS) | UK | - | act. | 00's - 10's | PC | - |  | |
|  | ULTRA Notebooks | PC comp. | UK | - | act. | 90's - 00's | PC |  |  | 
|  | Ultra Tec | Intele-Type | USA | - | () | 80's | TER | - |  | 
| Ultra Technologies | PC comp., (+4) | USA | - | () | 90's | PC | - |  | |
| Ultra Technology Distribution (Pty) Ltd. | PC comp. | RSA | - | () | 90's | PC | - |  | |
|  | Ultra-Comp Computer Hardware | PC comp., (+29) | USA | - | () | 90's | PC | - |  | 
| Ultranet Ltd. | 1 models | UK | - | () | 80's | TER | - |  | |
| Ultrascience (div. Gibbs Laboratories) | 1 models | USA | - | () | 80's | PC | - |  | |
|  | Ultratec, Inc. | Minicom, (+5) | USA | 1978 | act. | 00's | TER |  |  | 
|  | Ultratech Systems Pty Ltd. | PC comp. | AUS | - |  | 90's | PC | - |  | 
|  | Ultratek Research, Inc. | 1 models | USA | - | act. | 80's | TER | - | - | 
|  | Ultratime Industrial Ltd. (HUAHAI) | PC comp. | CHN | 2000 |  | 00's - 10's | PC | - |  | 
|  | Ultratronik | 3 models | GER | 1975 | act. | 80's - 10's | PC | - |  | 
| UltraViolet Machines  | PC comp. | UK | - |  | 00's | PC | - |  | |
|  | Ultron AG (Workey) | PC comp. | GER | 2001 | act. | 00's - 20's | PC | - |  | 
|  | Ultronic Systems Corp. | Videomaster, (+2) | USA | - | () | 70's | TER | - |  | 
|  | Ulyanovsk Plant Radiolampovy (URLZ) | KR-05 | RUS | - | () | 80's - 90's | PC | - |  | 
|  | Ulyanovsk Volodarskii Plant | 1 models | RUS | - | () | 60's | SC | - | - | 
|  | UM Digital, Inc. | PC comp. | KOR | - | act. | 00's | PC | - | - | 
|  | UMA Computers | USA | 1990 |  | 90's - 10's | PC | - |  | |
|  | UMAX Technologies, Inc.  | Mac clone, PowerPC, (+82) | TWN | 1987 | () | 90's | PC |  |  | 
|  | UMS Radio Factory  | 1 models | IND | 1957 | CALC | 80's | PC | - |  | 
| Umtech, Inc. | VideoBrain | USA | 1976 |  | 70's | PC |  |  | |
|  | UNA Computer | PC comp., (+6) | ITA | - | () | 00's | PC | - |  | 
| Unbound, Inc.  | QUBE, (+2) | USA | - | () | 80's | PC | - |  | |
| Under-ware Electronics | 2 models | USA | - | () | 90's | PC | - |  | |
|  | Underwood Corp.  | ELECOM, ORDFIAC, (+7) | USA | 1895 |  | 50's | PC |  |  | 
|  | Unesky Electronic Co., Ltd. | CHN | - | act. | 00's - 10's | PC | - |  | |
|  | Ungermann-Bass Networks, Inc.  | 1 models | USA | 1979 | 1988 | 80's | MC, PC | - |  | 
| Uni Components Oy  | PC comp. | FIN | 1991 |  | 90's | PC | - |  | |
| UNI-CGS, Inc. | PC comp. | USA | - | () | 90's | PC | - |  | |
|  | Uni-Ta Technology Co., Ltd. | PC comp. | CHN | 2003 | act. | 00's - 10's | PC | - |  | 
|  | Uni-World International Co., Ltd. | PC comp. | HON | - | () | 90's | PC | - | - | 
|  | UNI-X Pty Ltd. | PC comp., (+2) | AUS | - |  | 80's | PC | - |  | 
|  | Unibit S.p.A. (by Normerel)  | EuroPC, PCbit, (+10) | ITA | - |  | 80's | PC | - |  | 
|  | Unicent Technologies | PC comp., (+9) | USA | - | () | 90's | PC | - |  | 
| Unicom Automation | COMPORT | ? | - | () | 80's | PC | - |  | |
| Unicom, Inc. | CP-8, (+6) | USA | - | () | 70's | MC, TER | - | - | |
|  | Unicomp | iBEX | ITA | - |  | 80's | PC | - | - | 
|  | Unicomp, Inc. | 2 models | USA | 1969 |  | 70's | MC | - | - | 
|  | Unicorn Computer Corp. | TWN | 1986 |  | 80's - 10's | PC | - |  | |
| Unicorp Industries Ltd. | PC comp., (+4) | UK | - | () | 90's | PC | - |  | |
|  | Unicrown Industrial Group Co., Ltd. | TWN | - | () | 80's | PC | - |  | |
|  | Unidata  | Datapoint, (+7) | GER | 1973 | 1975 | 70's | MF |  |  | 
|  | Unidata s.r.l. | 21 models | ITA | - |  | 90's | PC, TER | - |  | 
| Unidata Systems, Inc. | PC comp. | USA | 1978 | () | 80's | PC | - |  | |
|  | Uniden Holdings Corp. | UniPro PC100, (+2) | JAP | 1966 | act. | 90's | PC |  | - | 
| Unidot Systems, Inc. | Cerebra, (+2) | USA | - | () | 80's | PC | - |  | |
|  | Unika Computer SA | PC comp., (+21) | FRA | 1998 |  | 00's | PC | - |  | 
|  | Uniker Kisszövetkezet | PC comp. | HUN | - |  | 80's | PC | - |  | 
|  | Unilab Ltd. | Three Chips Plus | UK | - | () | 80's | PC | - |  | 
|  | Unilever Computer Services Ltd. (UCSL) | Husky, (+3) | UK | 1970 | act. | 70's | PC, TER | - | - | 
|  | Unilogic, Ltd. | USA | - | () | 80's | PC | - |  | |
|  | Union Computer Co., Ltd. (ICL) | PC comp., (+7) | KOR | - |  | 90's | PC | - |  | 
| Union Markets S.p.A. | PC comp. | ITA | - |  | 00's | PC | - |  | |
|  | Union Profesional Informatica (UPI) | PC comp. | SPA | 1995 | act. | 00's | PC | - |  | 
| Unipac Computer Products | PC comp. | USA | - | () | 90's | PC | - |  | |
| UniPalm Ltd. | PC comp. | UK | 1986 | 2003 | 00's | PC |  |  | |
| Uniq Technology, Inc. | Uniqorn, (+17) | USA | 1986 |  | 90's | PC | - |  | |
| Unique Computers International, Ltd. | 1 models | USA | - |  | 80's | PC | - |  | |
| Unique Computers Ltd. | PC comp., (+3) | UK | - | () | 90's | PC | - | - | |
|  | Unique Creating Technology Co., Ltd. | HON | - | act. | 00's | PC | - |  | |
|  | Unisonic Products Corp.  | Futura 8300 | USA | 1972 |  | 80's | PC |  |  | 
|  | Unistar LC d.o.o.  | PC comp., (+2) | LIT | 1989 | act. | 90's - 00's | PC | - |  | 
|  | Unisys Corp.  | ClearPath, (+726) | USA | 1986 | act. | 80's - 20's | MF, MC, PC, TER |  |  | 
|  | Unit-e | PC Classic | USA | - | act. | 10's | PC | - |  | 
|  | UnitCom, Inc. | JAP | 1990 | act. | 90's - 10's | PC | - |  | |
|  | Unitech Electronics Co., Ltd. | 1 models | TWN | 1979 | act. | 00's - 10's | PC | - |  | 
| Unitech, Inc. | 2 models | USA | - | () | 70's | TER | - | - | |
|  | United Barcode Industries, Inc. (UBI)  | 1 models | USA | - | () | 90's | TER | - |  | 
|  | United Computer Products Co., Inc. (Optia) | USA | - | act. | 00's - 10's | PC | - |  | |
| United Computing Systems (div. United Telecommunications) | USA | - | () | 70's | MC | - |  | ||
| United Electronics Systems, Inc. | PC comp. | USA | - | () | 90's | PC | - |  | |
| United Hitech Corp. | PC comp. | TWN | 1989 | () | 90's | PC | - |  | |
|  | United Micro | 39 models | USA | - |  | 00's | PC | - |  | 
| United Microcomputer Applications, Inc. | USA | - | () | 80's | PC | - |  | ||
|  | United Polish British (Unipolbrit) (-> PPZ Polbrit) | ZX clone | POL | - | () | 80's | PC |  |  | 
| United Solutions, Inc. | PC comp. | USA | - | () | 80's | PC | - |  | |
| United Technology Corp. | PC comp. | TWN | 1988 | () | 90's | PC | - |  | |
|  | Unitek Systems Corp. | PC comp., (+7) | USA | - | () | 80's - 90's | PC | - | - | 
| Unitek Technology, Inc. | PC comp., (+12) | USA | 1989 | () | 90's | PC | - |  | |
|  | UNITEL | Minitel | FRA | - |  | 80's | TER | - | - | 
|  | Unitex Co. | PC comp., (+3) | USA | - | () | 80's | PC | - |  | 
|  | Unitron Eletrônica Ltda.  | 6 models | BRA | 1982 |  | 80's | PC | - |  | 
| Unitron, Inc. | PC comp., (+2) | TWN | 1979 | () | 90's | PC | - |  | |
|  | Unitronic | GER | 1969 | act. | 80's | PC | - |  | |
| Unitronic | 1 models | ? | - |  | 80's | PC | - |  | |
| Unitronics | Sonic | USA | - | () | 80's | PC | - |  | |
|  | Unitronix Corp. | System 3000, (+3) | USA | - | () | 80's | PC, MC, TER | - |  | 
| Univation, Inc. | 2 models | USA | - | 1989 | 80's | PC | - |  | |
| Universal Automation, Inc. | 1 models | USA | - | () | 90's | PC | - |  | |
|  | Universal Computer Systems, Inc. (UCS) | 1 models | USA | - | 2006 | 80's | TER | - |  | 
| Universal CPS International | PC comp. | USA | 1974 | () | 90's | PC | - |  | |
| Universal Data Research, Inc. | USA | 1977 | () | 80's | PC | - |  | ||
|  | Universal Data Systems (UDS) | 1 models | USA | 1970 | () | 80's | TER | - | - | 
|  | Universal Data, Inc. | 17 models | USA | 1983 | act. | 80's | TER, PC |  |  | 
|  | Universal Microelectronics Co., Ltd. (UMEC) | TWN | 1984 | act. | 00's - 10's | PC | - |  | |
| Universal Research, Inc. | PortaBrain | USA | 1982 | () | 80's | PC | - |  | |
|  | Universal Scientific Industrial Co., Ltd. (USI) | PC comp., (+50) | TWN | 1976 | () | 90's | PC | - |  | 
|  | Universal Technology, Inc. (UTEC) | 1 models | USA | - |  | 70's | PC, TER | - |  | 
|  | Universidad Central “Marta Abreu” de Las Villas (UCLV) | SILNA 999 | CUB | 1952 | act. | 60's | SC | - |  | 
|  | Universidad Nacional Autónoma de México (UNAM)  | AHR, Kan Balam, (+2) | MEX | 1910 | act. | 60's - 00's | SU |  | - | 
|  | Universidade de Coimbra | ENER 1000 | POR | 1290 | act. | 80's | PC |  |  | 
|  | Universidade de São Paulo (USP) | 2 models | BRA | 1934 | act. | 90's | SC | - | - | 
|  | Universidade Federal de Minas Gerais | MICRO 1 | BRA | 1927 | act. | 80's | PC | - | - | 
|  | Universidade Federal do Rio de Janeiro (UFRJ) | Pegasus-32x, (+2) | BRA | 1920 | act. | 80's | MC | - | - | 
|  | Università di Pavia | PAPIA | ITA | 1361 | act. | 80's | SC | - | - | 
|  | Universita di Pisa - Centro Studi Calcolatrici Elettroniche (CSCE) | 1 models | ITA | 1955 |  | 50's | SC |  |  | 
|  | Universität des Saarlandes | 1 models | GER | 1948 | act. | 90's | SC | - | - | 
|  | Universität Heidelberg | NERV | GER | 1386 | act. | 90's | SC | - | - | 
|  | Universität Regensburg | iDataCool | GER | 1962 | act. | 00's | SU |  | - | 
|  | Universitatea de Vest  | TimS | ROM | 1944 | act. | 90's | PC |  | - | 
|  | Université de Bretagne Occidentale (UBO) | 1 models | FRA | 1971 | act. | 90's | SC | - | - | 
|  | Université de Nice - Laboratoire d'Informatique Signaux et Sytèmes (i3S) | 1 models | FRA | - | act. | 90's | SC | - | - | 
|  | Université de Provence | OUPPI-1 | FRA | 1969 | act. | 80's | SC | - | - | 
|  | Universiti Teknologi Petronas (UTP) | Magic-1, Forth-1 clone, (+2) | MAL | 1997 | act. | 00's | PC | - |  | 
|  | University College London (UCL) | CLIP-4 | UK | 1826 | act. | 80's | PC | - |  | 
|  | University Computer Stores | USA | 1968 | act. | 90's | SC | - |  | |
|  | University Computing Company (UCC)  | COPE, (+8) | USA | - | () | 70's | MC, TER | - |  | 
|  | University of Melbourne | CSIRAC, (+3) | AUS | 1853 | act. | 50's | SC | - | - | 
|  | University of California (UC Berkeley) | CALDIC, MANIAC, SOAR, RISC, (+8) | USA | 1868 | act. | 50's - 80's | SC, PC |  |  | 
|  | University of Cambridge Mathematical Laboratory | EDSAC, (+4) | UK | 1949 | act. | 40's - 50's | SC |  | - | 
|  | University of Chicago | MANIAC | USA | 1890 | act. | 50's - 60's | SC, MF | - |  | 
|  | University of Chinese Academy of Sciences - Institute of Automation | 2 models | CHN | - | () | 70's | MF | - |  | 
|  | University of Harbin - Institute of Military Engineering | 901, (+2) | CHN | 1953 | act. | 50's - 60's | SC | - |  | 
|  | University of Illinois  | ILLIAC, ORDVAC, PLATO, (+11) | USA | 1867 | act. | 50's - 70's | SC, MF, TER |  |  | 
|  | University of Indiana | 68030 board | USA | 1820 | act. | 80's | PC | - | - | 
|  | University of Kobe | Kobe University Machine, (+3) | JAP | 1949 | act. | 80's | SC | - | - | 
|  | University of Kyushu | KT-1, (+2) | JAP | 1903 | act. | 50's | SC | - |  | 
|  | University of Leningrad | MYAMLIN | RUS | 1724 | act. | 50's | SC | - | - | 
|  | University of Linkoping - Lysator Computer Club | LYS-16 | SWE | 1973 | act. | 70's | PC |  |  | 
|  | University of London - Birkbeck College | APE(X)C, (+5) | UK | 1823 | act. | 40's - 50's | SC | - |  | 
|  | University of Manitoba  | Multi | CAN | 1877 | act. | 80's | SC | - | - | 
|  | University of Maryland | 1 models | USA | 1856 | act. | 80's | SC | - |  | 
|  | University of Michigan | Micro Mote (M3), (+2) | USA | 1817 | act. | 00's | PC | - |  | 
|  | University of Nebraska Omaha (UNO) | Firefly | USA | 1908 | act. | 00's | SU |  | - | 
|  | University of New South Wales | UTECOM | AUS | 1949 | act. | 50's | SC | - | - | 
|  | University of Oklahoma | 1 models | USA | 1961 | act. | 60's | SC | - | - | 
|  | University of Pennsylvania - Moore School | PENNSTAC, EDVAC, ENIAC, MSAC, (+4) | USA | 1945 | act. | 40's - 50's | SC, MF |  | - | 
|  | University of Saskatchewan | 1 models | CAN | 1907 | act. | 60's | SC | - | - | 
|  | University of Sidney | SILLIAC, SNOCOM | AUS | 1850 | act. | 50's | MF |  |  | 
|  | University of Tokyo | 12 models | JAP | 1877 | act. | 50's - 60's | SC | - |  | 
|  | University of Toronto | UTEC, (+3) | CAN | 1827 | act. | 50's | SC |  |  | 
|  | University of Tsukuba | CP-PACS/2048, (+6) | JAP | 1973 | act. | 80's - 00's | SU | - |  | 
|  | University of Utah | DDM1 | USA | 1850 | act. | 70's | SC | - |  | 
|  | University of Waterloo  | microWAT, (+2) | CAN | 1956 | act. | 80's | PC | - |  | 
|  | University of Wisconsin | WISC | USA | 1848 | act. | 50's | SC |  |  | 
|  | University Research and Development Associates, Inc. (URDA) | P68000 Lab, (+5) | USA | - | () | 80's | PC |  |  | 
|  | Universum (div. Quelle) | 1 models | GER | - |  | 80's | PC |  | - | 
|  | Uniwill Computer Corp.  | PC comp., (+81) | TWN | 1998 | 2007 | 00's | PC | - |  | 
| UnixHouse, Inc.  | USA | - | () | 80's | PC | - |  | ||
| Unoke Electronic Industries (-> USAC)  | JAP | 1960 | 1969 | 60's | PC | - |  | ||
|  | Up Board | UP2 | HOL | 2016 | act. | 10's | PC | - |  | 
| Up Technology | PC comp., (+2) | ? | - |  | 90's | PC | - |  | |
| Up Time Computer Services, Inc. | PC comp. | USA | - | () | 90's | PC | - |  | |
|  | UPA Technology, Inc. | USA | - | () | 80's | SC |  |  | |
| Update Digital Co., Ltd.  | PC comp. | CHN | - | act. | 00's - 10's | PC | - |  | |
|  | Upke Systems | 4 models | FRA | 1995 | 1998 | 90's | PC | - | - | 
|  | Ural Optical & Mechanical Plant (UOMZ) | Qvarum , Ural-48, (+2) | RUS | - | () | 90's | PC | - |  | 
|  | Urals Production Association VEKTOR  | Kvorum, (+6) | RUS | - | () | 90's | PC | - |  | 
| URDC | USA | - |  | 80's | PC | - | - | ||
| Urthgate Systems, Inc. | PC comp., (+3) | CAN | - | () | 90's | PC | - |  | |
| US Data Corp. | 2 models | USA | - | () | 70's - 80's | PC, TER | - |  | |
| US Logic | PC comp., (+15) | USA | - |  | 90's | PC | - |  | |
| US Micro Engineering Ltd. | PC comp., (+13) | USA | - | () | 90's | PC | - |  | |
| US Turbo Systems | PC comp. | USA | - | () | 80's | PC | - | - | |
| USA Eagle Faction International Holding Co., Ltd. | PC comp. | CHN | - | act. | 00's - 10's | PC | - |  | |
| USA Electronics | PC comp. | USA | - | () | 80's | PC | - |  | |
|  | USA Flex, Inc. | PC comp., (+11) | USA | 1977 |  | 90's | PC | - |  | 
| USA Software | PC comp. | USA | - |  | 90's | PC | - |  | |
| USAC Electronic Industrial Co., Ltd. (-> Uchida Yoko)  | JAP | 1969 | 1987 | 70's | MC |  |  | ||
|  | Usart Technologies India Pvt. Ltd. | IND | 2008 |  | 00's | PC | - |  | |
| User Easy | PC comp., (+9) | ? | - | () | 90's | PC | - |  | |
|  | User Friendly Computers | PC comp. | UK | 1992 |  | 00's | PC | - | - | 
|  | Usha Microprocess Controls Ltd.  | 1 models | IND | - | () | 80's | PC | - | - | 
|  | USPC Corp. | PC comp. | USA | - | () | 90's | PC | - | - | 
|  | Uspon Racunari d.o.o. | PC comp. | YOU | 2001 | act. | 00's - 10's | PC | - |  | 
|  | Ústav technické fyziky ČSAV  | ELISKA, (+3) | CZE | 1954 | () | 50's | SC |  |  | 
|  | Ústav teorie informace a automatizace Československé akademie věd (ÚTIA) | DIANA | CZE | 1959 |  | 60's | SC |  |  | 
| UTI Computers | PC comp. | USA | - | () | 90's | PC | - |  | |
|  | Uticor Automation GmbH | GER | 1976 |  | 90's - 10's | PC | - |  | |
|  | Uttar Pradesh Electronics Corporation Ltd. (UPTRON)  | 5 models | IND | 1974 | act. | 80's | PC | - | - | 
|  | UV Networks, Inc. | WebBox | USA | 2000 |  | 00's | PC | - |  | 
|  | Uwe Schneider GmbH | Milan, (+2) | GER | - | () | 80's - 90's | PC |  |  |