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GeneralRe: Weekend reading: Memory and Learning Pin
raddevus19-Jan-19 12:06
mvaraddevus19-Jan-19 12:06 
GeneralRe: Weekend reading: Memory and Learning Pin
Mike Hankey19-Jan-19 12:10
professionalMike Hankey19-Jan-19 12:10 
GeneralRe: Weekend reading: Memory and Learning Pin
raddevus19-Jan-19 12:15
mvaraddevus19-Jan-19 12:15 
GeneralRe: Weekend reading: Memory and Learning Pin
lopatir19-Jan-19 20:55
Memberlopatir19-Jan-19 20:55 
GeneralRe: Weekend reading: Memory and Learning Pin
Richard MacCutchan19-Jan-19 21:36
mveRichard MacCutchan19-Jan-19 21:36 
GeneralRe: Weekend reading: Memory and Learning Pin
Harrison Pratt21-Jan-19 3:32
professionalHarrison Pratt21-Jan-19 3:32 
GeneralRe: Weekend reading: Memory and Learning Pin
raddevus21-Jan-19 4:18
mvaraddevus21-Jan-19 4:18 
GeneralRe: Weekend reading: Memory and Learning Pin
rjmoses22-Jan-19 10:43
professionalrjmoses22-Jan-19 10:43 
Back in the 1920's, AT&T wanted to install electrically operated telephone exchanges to replace the operator based exchanges. At that time, you would place a call to "Butterfield 5678" and an operator would manually plug your phone line into the Butterfield 5678 socket.

Almon B. Stroger, an undertaker who believed that the wife (an operator) of one his competitors was rerouting calls for him to her husband, developed the first stepping switch which became the basis for telephone exchanges.

Back to AT&T, they wanted to know how people remembered things so they committed $20 million to a study before they implemented electro-mechanical exchanges.

AT&T found that people remember things in groups of 2's, 3's and 4's. That's why our telephone numbers are xxx-yyy-zzzz (area code, exchange prefix, local number).

Further, they assigned the lower area codes to the larger population centers, like New York is 212, Chicago is 312, etc. to appease the financial industry.

This was good until the mid 1970's when population and phone usage increases overwhelmed the phone numbers and exchanges had to be split.

Then came cell phones.

This is also the basis for IP addresses (plus it works real well for remembering a hex number as 4 groups of 3, e.g., 192.168.1.3).

Just some trivia.
GeneralRe: Weekend reading: Memory and Learning Pin
Member 916705727-Jan-19 21:20
MemberMember 916705727-Jan-19 21:20 
GeneralRazor Pages - Wow Pin
#realJSOP19-Jan-19 5:42
mva#realJSOP19-Jan-19 5:42 
GeneralUseless IoT item of the weekend Pin
OriginalGriff19-Jan-19 1:16
mveOriginalGriff19-Jan-19 1:16 
GeneralRe: Useless IoT item of the weekend Pin
Peter_in_278019-Jan-19 1:19
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GeneralRe: Useless IoT item of the weekend Pin
Mike Hankey19-Jan-19 2:28
professionalMike Hankey19-Jan-19 2:28 
GeneralRe: Useless IoT item of the weekend Pin
lopatir19-Jan-19 4:21
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GeneralRe: Useless IoT item of the weekend Pin
Mike Hankey19-Jan-19 4:34
professionalMike Hankey19-Jan-19 4:34 
GeneralRe: Useless IoT item of the weekend Pin
Mike Hankey19-Jan-19 2:27
professionalMike Hankey19-Jan-19 2:27 
GeneralRe: Useless IoT item of the weekend Pin
Mark_Wallace19-Jan-19 2:43
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GeneralRe: Useless IoT item of the weekend Pin
abmv19-Jan-19 4:07
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GeneralRe: Useless IoT item of the weekend Pin
Mark_Wallace19-Jan-19 10:05
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GeneralRe: Useless IoT item of the weekend Pin
Mycroft Holmes19-Jan-19 11:09
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GeneralJust been to the Amazon site... Pin
OriginalGriff19-Jan-19 0:41
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GeneralRe: Just been to the Amazon site... Pin
Mycroft Holmes19-Jan-19 11:11
professionalMycroft Holmes19-Jan-19 11:11 
GeneralInformal poll - how long does it take you to select a new laptop for a person in your life? Pin
charlieg19-Jan-19 0:40
Membercharlieg19-Jan-19 0:40 
GeneralRe: Informal poll - how long does it take you to select a new laptop for a person in your life? Pin
theoldfool19-Jan-19 1:11
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GeneralRe: Informal poll - how long does it take you to select a new laptop for a person in your life? Pin
#realJSOP19-Jan-19 1:21
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