 Complete the following phrase:  In 1958 a version of the integrated circuit was invented in Dallas by Jack Kilby of Texas Instruments; this event punctuated the Dallas areas 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 nations 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, United States President 