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Uso del computer (cont.)

•Pulire lo schermo con un panno morbido e pulito, inumidito con acqua. Applicare l’acqua sul panno, quindi passare il panno sullo schermo in una sola direzione, dalla parte superiore a quella inferiore. Rimuovere velocemente ogni traccia di liquido dallo schermo e mantenerlo asciutto. Un’esposizione protratta all’umidità potrebbe danneggiare lo schermo. Non usare un comune detergente per vetri per pulire lo schermo.

•Se il computer entra in contatto con liquidi o viene danneggiato, seguire le procedure descritte nella sezione “Se il computer entra in contatto con liquidi” o “Se il computer viene danneggiato o riceve un urto” della Guida dell’utente in linea. Se dopo avere seguito tali procedure il computer continua a non funzionare correttamente, contattare Dell (vedere la Guida dell’utente per ottenere i recapiti appropriati).

Abitudini ergonomiche nell’uso del computer

ATTENZIONE: l’uso prolungato o improprio della tastiera può comportare lesioni.

ATTENZIONE: osservare lo schermo o il monitor esterno per periodi prolungati può causare disturbi alla vista.

Per migliorare il comfort e l’efficienza, quando si configura e si usa il computer osservare le indicazioni ergonomiche fornite nella Guida dell’utente.

Interventi sui componenti interni del computer

Prima di rimuovere o installare moduli di memoria, schede miniaturizzate PCI o modem, seguire la procedura descritta rispettando la sequenza indicata.

AVVISO: l’installazione di moduli di memoria, di un modem o di una scheda miniaturizzata PCI è l’unica operazione che richiede l’accesso all’interno del computer.

AVVISO: per evitare possibili danni alla scheda di sistema, attendere 5 secondi dallo spegnimento del computer prima di scollegare una periferica o rimuovere un modulo di memoria, una scheda miniaturizzata PCI o un modem dalla scheda di sistema.

1Arrestare il sistema e spegnere tutte le periferiche collegate.

2Scollegare il computer e le periferiche dalle prese elettriche per ridurre i rischi di lesioni personali o scariche elettriche. Scollegare dal computer eventuali linee telefoniche o altre linee di telecomunicazione.

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Informazioni di sistema

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Dell C840 manual Abitudini ergonomiche nell’uso del computer, Interventi sui componenti interni del computer
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C840 specifications

The Dell C840, released in the early 2000s, was a powerful mobile workstation designed to meet the needs of professionals who demanded high performance in a portable format. As part of Dell's Precision series, the C840 was well-regarded for its robust build quality, advanced features, and capability to handle intensive computing tasks.

One of the standout features of the Dell C840 was its Intel Pentium 4 processor, which offered impressive processing power at the time. Users could opt between different configurations, some even including the Intel Pentium 4 Extreme Edition for those seeking maximum performance. The system was designed to handle demanding applications such as CAD, 3D modeling, and other graphics-intensive programs, making it a favorite among architects, engineers, and graphic designers.

The C840 also featured a vibrant 15-inch display, with options for a high-resolution screen that provided sharp visuals and ample screen real estate for multitasking. The display's quality was complemented by NVIDIA graphics options, including the Quadro4 700 Go graphics card, which was optimized for professional applications, ensuring smoother graphics rendering and improved performance in 3D applications.

In terms of memory, the Dell C840 supported a generous amount of RAM, with configurations allowing up to 2GB, which was substantial for its time. This memory capacity contributed to better multitasking capabilities and overall system performance, allowing users to run multiple applications simultaneously without noticeable slowdowns.

Connectivity was another strong point of the Dell C840. The laptop featured a variety of ports, including USB ports, parallel and serial ports, and an optional docking station, which enhanced its versatility for connecting to various peripherals. Wireless technology was also a part of the package, with the inclusion of Wi-Fi capabilities, making it easier for users to stay connected in different environments.

Durability and design were key aspects as well. The C840 featured a solid chassis designed to withstand the rigors of mobility, making it suitable for on-the-go professionals. Its keyboard was designed for comfort and responsiveness, a critical feature for users who spent long hours typing.

In summary, the Dell C840 was a notable mobile workstation that combined power, performance, and portability. With its advanced Intel processors, high-quality display, robust graphics options, ample memory, and strong connectivity features, it catered to professionals looking for a reliable and efficient tool to handle their demanding workloads. Though technology has evolved significantly since its release, the Dell C840 remains a milestone in the history of mobile computing for professionals.
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