Understand Personal Computing

What is a PC?

The whole nature of Personal Computing has changed dramatically over the past few years especially with the onset and devlopment of different types of systems such as Netbooks, Ulta-portables and relatively recently, Tablet computers.  As a result, buying a PC can be a difficult and confusing experience because there are now so many different factors to consider, including size, weight, (which is an important variable for those that require a really mobile unit), type of processor and amount of memory.

Because of the range and diversity of modern computing which can lead in some instances to potential confusion as to what and which types are suitable for individuals and organisations alike.  There are a number of factors that must be considered and it is no longer simply a matter of price, though clearly budget is important but other key considerations will be covered in this guide.

So, what is a PC?   .... Essentially a PC (Personal Computer) is a computer that is relatively small and affordable and allows its’ owner to use applications or programmes that can be used either for work or for home use.

The three most important components to consider when deciding on a personal computer are:

The size of the hard disk or drive (HD/HDD) that is used to permanently store applications, data & other information such as documents, spreadsheets and photos. Hard disks have a limited lifespan, typically around 5 years. That's why it's important to always backup your data.

The amount of memory (RAM or Random Access Memory). Memory as the name implies allows temporary data and programmes to be stored and accessed & modified. Unlike the hard drive, RAM is volatile which means that when you switch off the computer, any information held in RAM is lost’. Memory is measured in Megabytes (MB) and Gigabytes (GB).

The power and speed of the processor (a microprocessor or CPU) which is the ‘brains’ of the system and does most of the work. In this sense it performs most of the basic functions required by the system. This means that the more powerful the processor the more the computer can achieve and the generally the faster it will be. The speed and power of the processor is measured in Gigahertz (GHz). The higher the number of GHz, the faster the processor will be when compared to similar processors.

The Future of Personal Computing

The notion in the 1960’s that there would only ever need to be a few computers in existence, as we now know, is ridiculous! PC’s are used practically by most organisations and millions of private individuals across the Globe. In fact the world's leading information technology research and advisory company, Gartner, suggests that in the last quarter of 2010 alone, that some 93.5 million units were sold.

The growth of the market is set to continue especially with development and onset of new markets and new, smaller computers that perform different functions.

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