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The FD1771, sometimes WD1771, is the first in a line of floppy disk controllers produced by Western Digital. It uses single density FM encoding introduced in the IBM 3740. It is packaged in a 40-pin DIP. Later models in the series added support for MFM encoding and increasingly added onboard circuitry that formerly had to be implemented in external components. Originally packaged as 40-pin dual in-line package (DIP) format, later models moved to a 28-pin format that further lowered implementation costs.

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  • El FD1771, también llamado WD1771, es el primer controlador de disquete de una familia fabricados por Western Digital. Usa y soporta el formato de disco del . Viene empaquetado en un DIP de 40 pines.​​ Los modelos posteriores de la serie agregaron soporte para la codificación MFM y agregaron cada vez más circuitos integrados que anteriormente tenían que implementarse en componentes externos. Al cambiar por ello de DIP de 40 pines a DIP de 28 pines, redujo aún más los costos de implementación. (es)
  • The FD1771, sometimes WD1771, is the first in a line of floppy disk controllers produced by Western Digital. It uses single density FM encoding introduced in the IBM 3740. It is packaged in a 40-pin DIP. Later models in the series added support for MFM encoding and increasingly added onboard circuitry that formerly had to be implemented in external components. Originally packaged as 40-pin dual in-line package (DIP) format, later models moved to a 28-pin format that further lowered implementation costs. (en)
  • O WD1771 foi o primeiro de uma linha de microcontroladores de drives de disquete produzido pela Western Digital. Usava o formato densidade simples, modulação FM, e suportava o formato de disco IBM 3740. Era encapsulado como um de 40 pinos. (pt)
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  • El FD1771, también llamado WD1771, es el primer controlador de disquete de una familia fabricados por Western Digital. Usa y soporta el formato de disco del . Viene empaquetado en un DIP de 40 pines.​​ Los modelos posteriores de la serie agregaron soporte para la codificación MFM y agregaron cada vez más circuitos integrados que anteriormente tenían que implementarse en componentes externos. Al cambiar por ello de DIP de 40 pines a DIP de 28 pines, redujo aún más los costos de implementación. (es)
  • The FD1771, sometimes WD1771, is the first in a line of floppy disk controllers produced by Western Digital. It uses single density FM encoding introduced in the IBM 3740. It is packaged in a 40-pin DIP. Later models in the series added support for MFM encoding and increasingly added onboard circuitry that formerly had to be implemented in external components. Originally packaged as 40-pin dual in-line package (DIP) format, later models moved to a 28-pin format that further lowered implementation costs. (en)
  • O WD1771 foi o primeiro de uma linha de microcontroladores de drives de disquete produzido pela Western Digital. Usava o formato densidade simples, modulação FM, e suportava o formato de disco IBM 3740. Era encapsulado como um de 40 pinos. (pt)
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  • Western Digital FD1771 (es)
  • WD1771 (pt)
  • Western Digital FD1771 (en)
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