Skip to main content
. Author manuscript; available in PMC: 2016 Feb 11.
Published in final edited form as: JAMA. 2015 Jan 27;313(4):353–354. doi: 10.1001/jama.2014.17125

Table.

The Digitally Connecting World 2010–2020

2010 2015a 2020a
World population, billion       6.8             7.2       7.6
No. connected
 Devices, billion     12.5           25     50
 Devices per person       1.8             3.5       6.6
No. of smartphone subscriptions, billion       0.5             3.0       6.1
No. of wireless hotspots, million       3           47   500
No. of transistors, million/chip, nm     16/40           19/16     22/8
No. of sensors 20 Million   10 Billion 1 Trillion
No. of individuals sequenced   <10 400 000 5 Million
a

Numbers represent estimates based on literature.5