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RAM, which stands for Random Access Memory, is the memory in your computer that allows you to run programs. The more RAM you have, the more programs you can have open without seeing a drop in performance. For light use 512MB should be fine on Windows XP but 1GB or more is preferable in Windows Vista, especially if you plan to listen to your favourite album whilst using Word and browsing the internet at the same time.

512MB of RAM is equal to 0.5GB or Gigabytes.
1024MB of RAM is equal to 1GB or Gigabyte.
2048MB of RAMis equal to 2GB or Gigabytes.

Hard Disk capacity is measured in GBs which stands for Gigabytes. A gigabyte is 1000 MB or megabytes. The more GB you have the more info like photos and music you can store.

Graphics cards in desktop computers and graphics chips in laptops are manufactured by 3 main companies: Intel, ATI and nVidia. If you want to play modern games aim for an ATI or nVidia card or chip. Intel cards and chips work perfectly for general laptop use, video playback and older computer games.

Computer processors are made up of 1 or more cores. Having multiple cores allows the computer to run two or more processes at once, improving multi-tasking and speeding things up.

There are 2 main manufacturers of computer processors. They are Intel and AMD.