How to safely clean the dust inside of your computer

We all know what happens when your puter gets all dusty inside: it gets noisy!

Cooling fans start spinning like crazy. If things get bad enough, your CPU can even overheat, halting the system.

To avoid this mayhem, you should dust inside your computer twice a year.

But what to use? Dishwasher? Washing machine? Garden hose? Hydrochloric acid?

Just kidding!

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PPI, Retina displays, and what makes a screen ‘good’

Retina PPIIf you’ve read any reviews recently about phones, tablets, and other gizmos, you’ve probably come across a lot of talk of PPI (Pixels Per Inch) and “Retina” screens.

In short, the number of pixels crammed into a device’s screen seems to be uber-important to which gizmos get the best reviews.

But hang on a minute… Just what do these numbers mean?

Does it really matter that much?

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