In 1958 a version of the integrated circuit was invented in Dallas by Jack Kilby of Texas Instruments ; this event punctuated the Dallas area 's development as a center for high-technology manufacturing ( though the technology Mr. Kilby developed was soon usurped by a competing technology simultaneously developed in the " Silicon Valley " in California by engineers who would go on to form Intel Corporation ) . During the 1950s and 1960s , Dallas became the nation 's third-largest technology center , with the growth of such companies as Ling-Temco-Vought ( LTV Corporation ) and Texas Instruments . In 1957 , developers Trammell Crow and John M. Stemmons opened a Home Furnishings Mart , designed by Donald H. Speck , that grew into the Dallas Market Center , the largest wholesale trade complex in the world . The same year , the Dallas Memorial Auditorium ( now the Kay Bailey Hutchison Convention Center ) opened near Canton and Akard Streets in what is now the Convention Center District of downtown . On November 22 , 1963 , President John F. Kennedy was assassinated on Elm Street while his motorcade passed through Dealey Plaza in downtown Dallas . The upper two floors of the building from which Lee Harvey Oswald shot Kennedy , the Texas School Book Depository , have been converted into a historical museum covering the former president 's life and accomplishments
John F. Kennedy was assassinated
Assassination of John F. Kennedy
History of Dallas