was to become the 4004 microprocessor surrounded by a mixture of 3 different ICs containing ROM, shift registers, input/output ports and RAM—Intel's first product (1969) was the 3101 Schottky TTL bipolar 64-bit SRAM. Busicom's management agreed to Hoff's new approach and the chips' implementation was led by Federico Faggin who had previously developed the Silicon Gate Technology at Fairchild Semiconductor. It was this technology that made possible the design of the microprocessor and the dynamic RAMs. The 4 ICs were delivered to Busicom in January 1971. In mid-1971 Busicom, which had exclusive right to the design and its components, asked Intel to lower their prices. Intel renegotiated their contract and Busicom gave up its exclusive rights to the chips. A few months later, on November 15, 1971, Intel announced the immediate availability of the first microprocessor chipset family, the MCS-4 micro computer set (all from the Busicom design) with an advertisement in Electronic News. Broughtons of Bristol Broughtons of Bristol was a company selling and maintaining a broad line of business machines up until they ceased operations in 2016. They used to buy most of their equipment from Busicom and bought the Busicom trade name when Busicom went bankrupt in 1974. References External links Busicom 141-PF simulator + Original firmware: disassembled and commented Busicom history Busicom Business Machines Busicom Corp / Nippon Calculating Machine Corp Agreement between Intel & NCM Chip Hall of Fame: Intel 4004 Microprocessor (IEEE Spectrum website) Defunct manufacturing companies of Japan Electronics companies of Japan Mechanical calculator companies Electronic calculator companies Japan–United Kingdom relations