The Calculator that spawned the Microprocessor
The Busicom 141-PF calculator was crucial in developing the Intel 4004 microprocessor, enabling broader applications for the MCS-4 chip-set, particularly in industrial process control, despite Busicom's financial issues.
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The Busicom 141-PF calculator played a pivotal role in the development of the Intel 4004 microprocessor, marking a significant milestone in computing history. Busicom Corporation, originally Nippon Calculating Machine Corporation, transitioned from mechanical calculators to advanced electronic models in the late 1960s. Seeking to enhance their products, Busicom contracted Intel to develop integrated circuits for their calculators. Masatoshi Shima, a Busicom engineer, designed the 141-PF using a computer system approach, which allowed for flexibility in specifications. Intel, initially hesitant due to its limited experience in calculator electronics, eventually embraced a simplified design proposed by Marcian Hoff, leading to the creation of the 4004 microprocessor. This microprocessor, along with associated chips, was completed in early 1971, enabling Busicom to manufacture the 141-PF. However, Busicom faced financial difficulties, prompting negotiations that allowed Intel to sell the chip-set to other companies, thus opening the door for broader applications beyond calculators. The MCS-4 chip-set gained traction in various fields, particularly in industrial process control, despite initial skepticism from Intel's management. The overwhelming response to the MCS-4 at trade fairs highlighted its potential, leading to Intel's successful entry into the microprocessor market.
- The Busicom 141-PF calculator was instrumental in the creation of the Intel 4004 microprocessor.
- Busicom's innovative design approach combined calculator hardware with computer software technology.
- Intel's simplified design proposal led to the successful development of the 4004 microprocessor.
- Financial struggles at Busicom allowed Intel to market the MCS-4 chip-set to other industries.
- The MCS-4 chip-set found applications in industrial process control, expanding its use beyond calculators.
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