<P> While the architecture and specifications of the MCS - 4 came from the interaction of Hoff with Stanley Mazor, a software engineer reporting to him, and with Busicom engineer Masatoshi Shima, during 1969, Mazor and Hoff moved on to other projects . In April 1970, Intel hired Italian engineer Federico Faggin as project leader, a move that ultimately made the single - chip CPU final design a reality (Shima meanwhile designed the Busicom calculator firmware and assisted Faggin during the first six months of the implementation). Faggin, who originally developed the silicon gate technology (SGT) in 1968 at Fairchild Semiconductor and designed the world's first commercial integrated circuit using SGT, the Fairchild 3708, had the correct background to lead the project into what would become the first commercial general purpose microprocessor . Since SGT was his very own invention, Faggin also used it to create his new methodology for random logic design that made it possible to implement a single - chip CPU with the proper speed, power dissipation and cost . The manager of Intel's MOS Design Department was Leslie L. Vadász at the time of the MCS - 4 development but Vadász's attention was completely focused on the mainstream business of semiconductor memories so he left the leadership and the management of the MCS - 4 project to Faggin, who was ultimately responsible for leading the 4004 project to its realization . Production units of the 4004 were first delivered to Busicom in March 1971 and shipped to other customers in late 1971 . </P> <Table> <Tr> <Td> </Td> <Td> This section and the sections below needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2011) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section and the sections below needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2011) (Learn how and when to remove this template message) </Td> </Tr> <P> The Intel 4004 was followed in 1972 by the Intel 8008, the world's first 8 - bit microprocessor . The 8008 was not, however, an extension of the 4004 design, but instead the culmination of a separate design project at Intel, arising from a contract with Computer Terminals Corporation, of San Antonio TX, for a chip for a terminal they were designing, the Datapoint 2200--fundamental aspects of the design came not from Intel but from CTC . In 1968, CTC's Vic Poor and Harry Pyle developed the original design for the instruction set and operation of the processor . In 1969, CTC contracted two companies, Intel and Texas Instruments, to make a single - chip implementation, known as the CTC 1201 . In late 1970 or early 1971, TI dropped out being unable to make a reliable part . In 1970, with Intel yet to deliver the part, CTC opted to use their own implementation in the Datapoint 2200, using traditional TTL logic instead (thus the first machine to run "8008 code" was not in fact a microprocessor at all and was delivered a year earlier). Intel's version of the 1201 microprocessor arrived in late 1971, but was too late, slow, and required a number of additional support chips . CTC had no interest in using it . CTC had originally contracted Intel for the chip, and would have owed them US $50,000 (equivalent to $302,136 in 2017) for their design work . To avoid paying for a chip they did not want (and could not use), CTC released Intel from their contract and allowed them free use of the design . Intel marketed it as the 8008 in April, 1972, as the world's first 8 - bit microprocessor . It was the basis for the famous "Mark - 8" computer kit advertised in the magazine Radio - Electronics in 1974 . This processor had an 8 - bit data bus and a 14 - bit address bus . </P>

When was the first micro processor build and what was it