The human brain contains about 10^11 neurons. Each neuron has about 5*10^3 synapses, and signals are transmitted along these synapses at an average frequency of about 10^2Hz. Each signal contains, say, 5 bits. This equals 10^17 ops.
Neurons = 100,000,000,000
Synapses per neuron = 5000
Signal transmission frequency = 100Hz
Signal size = 5 bits
Total analogous computer clock speed = 100,000,000 GHz
So we had 1GHz chips in 2000, we are up to around 1.7GHz in the first half of 2001, so we should reach 2GHz by end of 2001. This doubling effect known as Moore’s law has held up very well since the late 1940s. It shows that computer power doubles approximately every 18 months but recently has been increasing to every 12 months. If we assume this trend continues then the table below shows the number of years it will take before a computer has the same operational speed of the human brain.
Or to put it in a different perspective: If your current desktop PC or Laptop currently runs at 1GHz, then 100 million of those machines combined into one machine will be the equivalent power of a human brain. And we should achieve that by 2030.
Year, Clock Speed in GHz
2000 1
2001 2
2002 4
2003 8
2004 16
2005 32
2006 64
2007 128
2008 256
2009 512
2010 1024
2011 2048
2012 4096
2013 8192
2014 16384
2015 32768
2016 65536
2017 131072
2018 262144
2019 524288
2020 1048576
2021 2097152
2022 4194304
2023 8388608
2024 16777216
2025 33554432
2026 67108864
2027 134217728
Neat huh? Or is that simply mind-boggling?
Cris
Neurons = 100,000,000,000
Synapses per neuron = 5000
Signal transmission frequency = 100Hz
Signal size = 5 bits
Total analogous computer clock speed = 100,000,000 GHz
So we had 1GHz chips in 2000, we are up to around 1.7GHz in the first half of 2001, so we should reach 2GHz by end of 2001. This doubling effect known as Moore’s law has held up very well since the late 1940s. It shows that computer power doubles approximately every 18 months but recently has been increasing to every 12 months. If we assume this trend continues then the table below shows the number of years it will take before a computer has the same operational speed of the human brain.
Or to put it in a different perspective: If your current desktop PC or Laptop currently runs at 1GHz, then 100 million of those machines combined into one machine will be the equivalent power of a human brain. And we should achieve that by 2030.
Year, Clock Speed in GHz
2000 1
2001 2
2002 4
2003 8
2004 16
2005 32
2006 64
2007 128
2008 256
2009 512
2010 1024
2011 2048
2012 4096
2013 8192
2014 16384
2015 32768
2016 65536
2017 131072
2018 262144
2019 524288
2020 1048576
2021 2097152
2022 4194304
2023 8388608
2024 16777216
2025 33554432
2026 67108864
2027 134217728
Neat huh? Or is that simply mind-boggling?
Cris