1971
ID: 420
Stephen Cook proves SAT is NP-complete, with implications for graph coloring and other problems
ID: 420
1971
ID: 1886
Paul Wender publishes 'Minimal Brain Dysfunction in Children' - first ADHD monograph
ID: 1886
1971
ID: 1887
Accounting Principles Board issues APB Opinion 16 on business combinations
ID: 1887
1971
ID: 1888
UN passes resolution prohibiting advertising psychotropic drugs to general public
ID: 1888
1971
ID: 1889
NY Legislative Committee investigates Rosenstiel; Samuel Bronfman dies; Casey becomes SEC Chairman
ID: 1889
1971
ID: 1890
Intel 4004 microprocessor launched using mathematical logic design
ID: 1890
1971
ID: 1891
Kevlar first sold commercially by DuPont for tire reinforcement
ID: 1891
1971
ID: 1892
Dr. Ogra: Post-tonsillectomy, anti-polio antibody titers decreased 6-8 fold
ID: 1892
1971
ID: 4381
Intel introduces 1702 EPROM - erasable programmable read-only memory, can be reprogrammed with UV light
ID: 4381
1971
ID: 4494
Stephen Cook formulates P vs NP problem
ID: 4494
1971
ID: 4328
November 1971
Intel releases 4004 microprocessor designed by Ted Hoff and Federico Faggin - first commercial microprocessor, 2,300 transistors
ID: 4328