IBM koos tänutahvliga Perfokaart Perfokaart on nelinurkne kartongist kaart kannab digitaalset informatsiooni sõltuvalt avade olemasolust või puudumisest teatud kohtades. Praeguseks on perfokaart aegunud meedium Perfokaardid olid laialdaselt kasutuses 19. sajandil kangastelgede juhtimiseks 20. sajandil muusikainstrumentide kontrollimiseks arvutusmasinates sisend-,väljund- ja salvestusmeediumina. IBM Asutati 1896. aastal toona oli nimeks Tabulating Machine Company. Asutajaks oli Herman Hollerith 1911 moodustati aksiaselts Computing Tabulating Recording Corporation (CTR) 1917. aastal sai CTRi Kanada ja Lõuna-Ameerika tütarettevõtete nimeks International Business Machines ehk IBM. Kogu firma ühtse nime alla koondamine leidis aset 1924. aastal, Allikad J. J. O'Connor ja E. F. Robertson, 14.02.2012 Herman Hollerith Biography http://www.gap-system.org/~history/Biographies/Hollerith.html IBM, 14.02.2012, Herman Hollerith Biography
intercept stations in the field on Pearl Harbor Day, had been headed since March by Lieutenant Colonel Rex W. Minckler, a career Signal Corps officer. Friedman served as his chief technical assistant. S.I.S. comprised the Signal Intelligence School, which trained Regular Army and Reserve officers in cryptology, the 2nd Signal Service Company, which staffed the intercept posts, and four Washington sections of the S.I.S. proper: the A, or administrative, which also operated the tabulating machinery; the B, or cryptanalytic; the c, or cryptographic, which prepared new U.S. Army systems, studied the current systems for security, and monitored Army traffic for security violations; and the D, or laboratory, which concocted secret inks and tested suspected documents. The B section, under Major Harold S. Doud, a West Point graduate, had as its mission the solution of the military and diplomatic systems not only of Japan but of other countries. In this it apparently achieved at
C2T Cable Changing Technology C&T Chips and Technologies CTB Cipher Type Byte CTC Channel To Channel + Counter/Timer Chip CTCP Client-To-Client Protocol CTI Computer-Telephony Integration CTL Complex Text Layout CTOS Cassette Tape Operating System + Computerized Tomography Operating System + Convergent Technologies Operating System CTP Community Technology Preview [Microsoft] CTPA Coax-to-Twisted-Pair Adapter CTRCO * Calculating,Tabulating,Recording Company (The name of this company was changed to "International Business Machines" by Thomas J. Watson, Sr.) CTRL Control CTS Clear To Send + Computer Telephony Solution [IBM] + Customer Telephone System CTSS * Compatible Time Sharing System CUA Common User Access [IBM] CUB Cursor Backward CUD Cursor Down CUE Custom Updates and Extras (card) [Egghead Software] CUF Cursor Forward CUI Character-Oriented User Interface +
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