When it comes to technology, nothing really goes away – or at least not for a very, very long time.
One example – a couple of years back, someone swore to me that they knew of at least one system in use that could still calculate in pounds, shillings and pence — which meant the code must have have been somewhere around 45 years old and still running unchanged.
So it’s unwise to predict the imminent death of any particular technology. And it’s even more unwise to predict the death of the PC in particular, which had been done many times before. 
 By Steve Ranger for ZDNet