Caring of Hard Disk Drives

Avoid rough handling of the Hard Disk Drives (HDD's). This is because rough handling may cause damage to the HDD & these by causing the data loss.

Never expose the internal circuitry of the HDD to open air. This may cause dirt or moisture being accumulated on the internals of the HDD that may reduce the lifespan of the HDD.

Check that cables are properly connected & sufficent power is being supplied to the HDD.

Never move HDD while it is still spinning.

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ISDN

ISDN stands for "Integrated Services Digital Network" A digital telephone connection like a modem that uses digital links & offers speeds above five times that of an analog modem. The ISDN system is a packet system that can also handle voice communication.

Diference between laptop & desktop computer

Most laptop processors are soldered directly in the motherboard, which means they cannot be removed. If there is some error in laptop processor, the entire motherboard needs to be replaced. Laptops processors can be slowed down when they are not running to their full capacity. The processor uses a technique called processor trotling that allows the operating system to put the processor in active sleep mode or shutdown mode. Laptop processors run at reduced clock rate than desktop processors. This helps them to produce less heat when running at full capacity. Laptop processors consume less power which though make them a slow performer but it greatly helps them to save battery life.

Asyncronous Communication

Asynchronous &is any data transmission that does not link the two devices with a common data clock. A Signal called a start bit is sent at the beginning of each segment, & a signal called a stop bit is sent at the end, these let the receiving device note the baundries(beginning & end) of a transmission packet. Early PC modems were almost Asynchronous devices operating at speeds of no more than 18,000 bps.

WorkStation Care

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