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Documenti e White Paper per i Tecnici Hardware PC
Riferimenti a documenti e white paper di supporto per il lavoro del Tecnico Hardware: specifiche del bus USB, caratteristiche del processore Pentium III, evoluzione delle tecnologie delle memorie ed altri documenti dalla rete.

pallino.gif (516 byte)An Introduction to USB 2.0 (includes graphs)  (PDF 725Kb) text only version (PDF 18Kb)
This document introduces the features and benefits of USB 2.0 and describes its impact to users, PC manufacturers and PC peripheral manufacturers. Following a recap of USB 1.1, this paper overviews the technical aspects of USB 2.0 whose details are being worked into a specification that is planned to be available in late 1999 [tratto da www.usb.org].
pallino.gif (516 byte)The Future I/O Alliance and Architectural Strategy (PDF 98 Kb)
The input/output (I/O) subsystem of today's industry standard servers is falling behind the performance increases of the microprocessors. While microprocessors are following the Moore's law prediction by doubling performance approximately every 18 months, the I/O subsystem has remained essentially static since 1992. Several industry leaders in system and adapter design have joined to propose two new industry standards that will improve I/O performance: PCI-X and Future I/O. PCI-X is an enhancement to the existing PCI bus protocol that will allow the bus bandwidth to increase to 1066 MB/s. The Future I/O initiative is a revolutionary design change that will move the industry from a shared bus to a point-to-point, switched fabric interconnect. This paper describes some of the driving forces behind the change to a point-to-point connection and the benefits of moving to that architecture. The paper also compares Future I/O architecture with the Next Generation Input Output architecture [tratto da www.compaq.com].
pallino.gif (516 byte)Pentium® III Processor at 450 MHz, 500 MHz, 550 MHz and 600 MHz (PDF 970 Kb)
The Pentium® III processor is designed for high-performance desktops and for workstations and servers. It is binary compatible with previous Intel Architecture processors. The Pentium III processor provides the best performance available for applications running on advanced operating systems such as Windows  95, Windows NT and UNIX. This is achieved by integrating the best attributes of Intel processors—the dynamic execution, Dual Independent Bus architecture plus Intel MMX™ technology, bringing a new level of performance for systems buyers. The Pentium III processor is scaleable to two processors in a multiprocessor system and extends the power of today’s Pentium II processor with performance headroom for business media, communication and internet capabilities. Systems based on Pentium III processors also include the latest features to simplify system management and lower the cost of ownership for large and small business environments. The Pentium III processor offers great performance for today’s and tomorrow’s applications [tratto da www.intel.com].
pallino.gif (516 byte)Memory Technology Evolution (PDF 212 Kb)
This paper will preface by explaining the industry-wide movement from SIMMs to DIMMs. It will then discuss the evolution of the main memory technology that Compaq uses in their servers, workstations, and commercial desktops. This section will cover three main memory types: Fast Page Mode (FPM), Extended Data Out (EDO), and Synchronous Dynamic Random Access Memory (SDRAM). The evolution of the graphics memory that Compaq uses will also be discussed. This section will cover three graphics memory types: Video Random Access Memory (VRAM), Windows Random Access Memory (WRAM) and Synchronous Graphics Random Access Memory (SGRAM). For each of these six memory types the features, benefits, and reasons for the movement to new technology are addressed [tratto da www.compaq.com].

 

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