Upgrading a Computer

Computer industry is a fast changing industry. A new technology is almost introduced
daily. Therefore, as a computer technician it is your responsibility to replace the existing computer components with newer components to make the computer up to date. This is called computer upgradation.

You usually need to upgrade the computer to improve its performance and capabilities like memory, speed, etc. Upgrading is a cost-effective way to improve the technology and increase the productivity when the budget is highly constrained.

Preparing to Upgrade

Before you actually start upgrading a computer, you need to prepare yourself for the
upgradation so that the upgradation can be performed smoothly. This also ensures that if something goes wrong, then you can return the system to the state that it was prior to the upgradation.
The following checklist will help you to determine what all things are required before performing the upgradation:

Assemble the required toolkit
Collect the required documentations
Create a backup of all data
Have a copy of the original Windows installation CD
Set a system restore point (only in case of Windows Me/XP)

Comments

Tweezers

This tool is used tp piking up very small objects like small screws that are inconvenient to pick with human hand.

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.

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.

WorkStation Care

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