How to select a Personal Computer


In today advanced world Personal Computer (a.k.a  PC) come in many brands (Dell, Sony, HP, IBM, Acer, etc.) and configurations (Windows, Mac OS X or Linux).  But in this article we’re going to concentrate on Windows as the operating system (OS) since is what runs on most of the PCs.  In order to determine what suits your need to acquire a pc, it’ll be helpful to comprehend each component of a typical computer and its performance.  Just keep in mind that a pc can be used at home or in the office.

PC Components
Prior to buying a pc, you need to consider your choices as regard to each component that we’ll explain below.  The options you pick can impact the performance, graphics, sound… etc.

PROCESSOR
The Central Processing Unit is one of the key component which determines how quickly will executes software programs.  What determines that is the processor’s speed which is measured in gigahertz (GHz).  Consider 2GHz or higher should be enough speed to run most of pc programs, such as Excel spreadsheet application.Tip: In case you’ll be planning to run high quality games or graphics designs programs you should look for at least 3GHz.

MEMORY
Usually referred to as Random Access Memory (RAM), which is used to store programs that are currently operating making it volatile, meaning it doesn’t retain its contents in the absence of power.  RAM is measured in Megabytes (MB) and Gigabytes (GB), think of this 1GB being equal to 1,000MB.  The more RAM a PC has, the more quickly and simultaneously programs can run without having the pc to come to a halt (freeze).

HARD DRIVE
The hard drive is the main storage component of a computer.  A typical hard drive holds dozens of software programs and hundreds of thousands of files.  Among the files are the operating system, applications and files. Hard drive capacity is usually measured in Gigabytes (GB), but lately you will notice them in Terabytes (TB).  When looking for hard drive the one thing to look for is how much data it could hold but also the speed it takes to read/write data.  When you purchase a pc make sure the hard drive capacity of 80GB or more.

DISK DRIVE
They are very commonly used in computers to read software and consumer media distributed in disc form, and to record discs for archival and data exchange.  These are devices that read data stored on CDs and DVDs, which can hold everything from documents, music and videos.  Most of the computers today come with a combo DVD+/-RW which allows you to read, write on both CDs and DVDs.  Optical drives are non-critical part of the computer that reads optical media, you don’t need them for the computer system to operate; but for troubleshooting purposes you may need them.

COMPUTER MONITOR
The display device in modern monitors is typically a liquid crystal display (LCD) thin panel.  They’re much thinner, lighter, and energy efficient than the old CRT monitors.

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