Tennologia isa

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  • Publicado : 13 de septiembre de 2012
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tecnología ISA

Tres ranuras ISA.
Artículo principal: Industry Standard Architecture.
La ranura ISA es una ranura de expansión de 16 bits capaz de ofrecer hasta 16 MB/s a 8 megahercios. Los componentes diseñados para la ranura ISA eran muy grandes y fueron de las primeras ranuras en usarse en las computadoras personales. Hoy en día es una tecnología en desuso y ya no se fabrican placas madrecon ranuras ISA. Estas ranuras se incluyeron hasta los primeros modelos del microprocesador Pentium III. Fue reemplazada en el año 2000 por la ranura PCI.

(Parallel ATA). PATA es un estándar de interfaz para conexiones entre dispositivos de almacenamiento  en computadoras, como discos duros, unidades de CD-ROM y unidades de estado sólido.

El ATA paralelo o PATA es el ATA original, quecomenzó a llamarse así en 2003 luego de que fuera lanzado el Serial ATA.

El estándar PATA permite cables con una longitud de hasta 46 centímetros (18 pulgadas), por esta limitación esta tecnología sólo se utiliza para conectar dispositivos de almacenamiento dentro del gabinete de algunas las computadoras.

Actualmente han sido reemplazados casi en su totalidad por los Serial ATA (SATA) en lasnuevas computadoras.

Paras más información ver: ATA. |
Serial ATA (SATA or Serial AT Attachment) is a computer bus interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives. Serial ATA was designed to replace the older parallel ATA (PATA) standard (often called by the old name IDE), offering several advantages over the older interface: reducedcable size and cost (7 conductors instead of 40), native hot swapping, faster data transfer through higher signalling rates, and more efficient transfer through an (optional) I/O queuing protocol.
SATA host-adapters and devices communicate via a high-speed serial cable over two pairs of conductors. In contrast, parallel ATA (the redesignation for the legacy ATA specifications) used a 16-bit widedata bus with many additional support and control signals, all operating at much lower frequency. To ensure backward compatibility with legacy ATA software and applications, SATA uses the same basic ATA and ATAPI command-set as legacy ATA devices.
SATA has replaced parallel ATA in consumer desktop and laptop computers, and has largely replaced PATA in new embedded applications. SATA's market sharein the desktop PC market was 99% in 2008.[2] PATA remains widely used in industrial and embedded applications that use CompactFlash storage, though even there, the new CFast storage standard is based on SATA.[3][4]
Serial ATA industry compatibility specifications originate from The Serial ATA International Organization (aka. SATA-IO, serialata.org). The SATA-IO group collaboratively creates,reviews, ratifies, and publishes the interoperability specifications, the test cases, and plug-fests. As with many other industry compatibility standards, the SATA content ownership is transferred to other industry bodies: primarily the INCITS T13 subcommittee ATA, the INCITS T10 subcommittee (SCSI); a subgroup of T10 responsible for Serial Attached SCSI (SAS). The complete specification fromSATA-IO.[5] The remainder of this article will try to use the terminology and specifications of SATA-IO.
A CPU socket or CPU slot is a mechanical component that provides mechanical and electrical connections between a microprocessor and a printed circuit board (PCB). This allows the CPU to be replaced without soldering.
Common sockets have retention clips that apply a constant force, which must beovercome when a device is inserted. For chips with a large number of pins, either zero insertion force (ZIF) sockets or land grid array (LGA) sockets are used instead. These designs apply a compression force once either a handle (for ZIF type) or a surface plate (LGA type) is put into place. This provides superior mechanical retention while avoiding the risk of bending pins when inserting the chip...
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