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The first microprocessors were designed and manufactured in the 1970s. Intel's 4004 of 1971 is widely regarded as the first commercial microprocessor. Designers predominantly used MOSFET transistors with pMOS logic in the early 1970s, switching to nMOS logic after the mid-1970s. nMOS had the advantage that it could run on a single voltage, typically +5V, which simplified the power supply requirements and allowed it to be easily interfaced with the wide variety of +5V transistor-transistor logic (TTL) devices. nMOS had the disadvantage that it was more susceptible to electronic noise generated by slight impurities in the underlying silicon material, and it was not until the mid-1970s that these, sodium in particular, were successfully removed to the required levels. At that time, around 197

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  • Cronologia dels microprocessadors (ca)
  • Chronologie des microprocesseurs (fr)
  • Microprocessor chronology (en)
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  • La cronologia dels microprocessadors arrenca amb l'Intel 4004, una Unitat Central de Procés (CPU) de 4 bits llençada per Intel Corporation el 1971. Fou la primera CPU completa en un sol xip, la primera comercialment disponible com un processador, gràcies a l'ús de la nova tecnologia de portes lògiques basada en silici, que permetia la integració d'un elevat nombre de transistors i una velocitat més ràpida del que mai abans havia estat possible. (ca)
  • Dans les années 1970 les microprocesseurs traitent des mots de 8 bits et sont surtout fabriqués en technologie N MOS. (fr)
  • The first microprocessors were designed and manufactured in the 1970s. Intel's 4004 of 1971 is widely regarded as the first commercial microprocessor. Designers predominantly used MOSFET transistors with pMOS logic in the early 1970s, switching to nMOS logic after the mid-1970s. nMOS had the advantage that it could run on a single voltage, typically +5V, which simplified the power supply requirements and allowed it to be easily interfaced with the wide variety of +5V transistor-transistor logic (TTL) devices. nMOS had the disadvantage that it was more susceptible to electronic noise generated by slight impurities in the underlying silicon material, and it was not until the mid-1970s that these, sodium in particular, were successfully removed to the required levels. At that time, around 197 (en)
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