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This Week(ish) in Technology
This Week(ish) in Technology
How Technology has Evolved Over the Years
How Technology has Evolved Over the Years
March 4, 1877: New Kind of Microphone
March 4, 1877: New Kind of Microphone
Berliner filed for a new patent on the microphone
Assured the future of the telephone; without this, telephones would have sounded terrible for decades and would not have been able to work for great distances
Supreme Court ruled that Edison invented the carbon microphone, not Berliner
However, it was common knowledge that transmitting speech by varying the current between two contacts as they affected sound waves
Berliner filed for a new patent on the microphone
Assured the future of the telephone; without this, telephones would have sounded terrible for decades and would not have been able to work for great distances
Supreme Court ruled that Edison invented the carbon microphone, not Berliner
However, it was common knowledge that transmitting speech by varying the current between two contacts as they affected sound waves
QuickTime™ and a decompressor
are needed to see this picture.
March 17, 1953: Black Box is Invented
March 17, 1953: Black Box is Invented
Australian researcher David Warren invented a device to record cockpit noise and instruments during flight
In response to jet-powered airliner crashes Early versions could record up to four hours
of voice instrument data Initially, rejected for privacy reasons After a 1960 crash in Queensland where the
cause could not be determined, the Australian government required all commercial planes to carry a black box
Australian researcher David Warren invented a device to record cockpit noise and instruments during flight
In response to jet-powered airliner crashes Early versions could record up to four hours
of voice instrument data Initially, rejected for privacy reasons After a 1960 crash in Queensland where the
cause could not be determined, the Australian government required all commercial planes to carry a black box
Modern Black BoxesModern Black Boxes
Must withstand several tests: pressure of being submerged to 20,000 feet below the ocean, 3,400-g crash-impact test
Future improvements: transmitting flight data in real time to ground stations - gained momentum after the Air France flight 447 disappeared in 2009
Must withstand several tests: pressure of being submerged to 20,000 feet below the ocean, 3,400-g crash-impact test
Future improvements: transmitting flight data in real time to ground stations - gained momentum after the Air France flight 447 disappeared in 2009
QuickTime™ and a decompressor
are needed to see this picture.
March 8, 1955: Whirlwind Machine Invented
March 8, 1955: Whirlwind Machine Invented
Permanent set of instructions on how the computer should operate
Six years later - first digital computer that could display real-time and graphics on a video terminal
Used 4,500 vacuum tubes to process data
Occupied 3,300 square feet
Permanent set of instructions on how the computer should operate
Six years later - first digital computer that could display real-time and graphics on a video terminal
Used 4,500 vacuum tubes to process data
Occupied 3,300 square feet
March 11, 1985: Nations First Local,
Public Packet- Switching Network
March 11, 1985: Nations First Local,
Public Packet- Switching Network Southern New England Telephone Compa
ny turned on ConnNet
Customers in Connecticut could access services such as Dow Jones News Retrieval, CompuServe, and the National Library of Medicine
Connections pulled down 300 to 1,200 bits per second (now, we are downloading more than 4,000 times as fast)
Southern New England Telephone Company turned on ConnNet
Customers in Connecticut could access services such as Dow Jones News Retrieval, CompuServe, and the National Library of Medicine
Connections pulled down 300 to 1,200 bits per second (now, we are downloading more than 4,000 times as fast)
March 15, 1985: Internet’s First Domain Name
Registered
March 15, 1985: Internet’s First Domain Name
Registered Symbolics.com registered - developed Al software
Noncommercial medium - military and academic tool
Only five were registered in 1985 - Apple registered in 1987; Microsoft registered in 1991
Symbolics still exists
Symbolics.com registered - developed Al software
Noncommercial medium - military and academic tool
Only five were registered in 1985 - Apple registered in 1987; Microsoft registered in 1991
Symbolics still exists
QuickTime™ and a decompressor
are needed to see this picture.