12 Dec
2012
12 Dec
'12
11:52 a.m.
http://electronicdesign.com/article/analog-and-mixed-signal/555-timer-begin…
A nice story written by Hans Camenzind's son. Does anyone have the
definitive answer on WHY it was called the 555?
--Chuck
12 Dec
12 Dec
11:57 a.m.
Electronicdesign.com not available?
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
(830)792-3400 phone (830)792-3404 fax
AOL IM elcpls
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]
On Behalf Of Chuck Guzis
Sent: Wednesday, December 12, 2012 1:52 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: NE555 story on ED
http://electronicdesign.com/article/analog-and-mixed-signal/555-timer-beginn
ing-hans-camenzind-74715?NL=ED-03
A nice story written by Hans Camenzind's son. Does anyone have the
definitive answer on WHY it was called the 555?
--Chuck
-----
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12:21 p.m.
On 12/12/2012 2:57 PM, Cindy Croxton Electronics Plus wrote:
Electronicdesign.com not available?
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
(830)792-3400 phone (830)792-3404 fax
AOL IM elcpls
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]
On Behalf Of Chuck Guzis
Sent: Wednesday, December 12, 2012 1:52 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: NE555 story on ED
http://electronicdesign.com/article/analog-and-mixed-signal/555-timer-beginn
ing-hans-camenzind-74715?NL=ED-03
A nice story written by Hans Camenzind's son. Does anyone have the
definitive answer on WHY it was called the 555?
--Chuck
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2805 / Virus Database: 2634/5952 - Release Date: 12/11/12
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2805 / Virus Database: 2634/5952 - Release Date: 12/11/12
there are times when they seem to go offline
steve
12:27 p.m.
On 12/12/2012 11:57 AM, Cindy Croxton Electronics Plus wrote:
Electronicdesign.com not available?
Let's try that again, (I hate long URLs!):
http://electronicdesign.com/article/analog-and-mixed-signal/555-timer-begin…
--Chuck
11:59 a.m.
It has been hypothesized that the 555 got its name from the three 5 k?
resistors used within,[3] but Hans Camenzind has stated that the number was
arbitrary.[1]
From the Wikipedia article
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
(830)792-3400 phone (830)792-3404 fax
AOL IM elcpls
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]
On Behalf Of Chuck Guzis
Sent: Wednesday, December 12, 2012 1:52 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: NE555 story on ED
http://electronicdesign.com/article/analog-and-mixed-signal/555-timer-beginn
ing-hans-camenzind-74715?NL=ED-03
A nice story written by Hans Camenzind's son. Does anyone have the
definitive answer on WHY it was called the 555?
--Chuck
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2805 / Virus Database: 2634/5952 - Release Date: 12/11/12
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2805 / Virus Database: 2634/5952 - Release Date: 12/11/12
12:29 p.m.
On 12/12/2012 11:59 AM, Cindy Croxton Electronics Plus wrote:
It has been hypothesized that the 555 got its name
from the three 5 k?
resistors used within,[3] but Hans Camenzind has stated that the number was
arbitrary.[1]
Yes, but why start with 555 and not 550? I suppose it could have some
roots in an after-work drinking session with the subject "triple nickel"
....
--Chuck
16 Dec
16 Dec
1:22 p.m.
In his own words:
http://www.semiconductormuseum.com/Transistors/LectureHall/Camenzind/Camenz…
How did the
555 name come about?
Signetics had ?500? numbers, and the earlier product I worked
on was the 565, 566 and 567. It was just arbitrarily chosen. It was Art Fury (Marketing
Manager) who thought the circuit was gonna sell big who picked the name ?555?.
1:43 p.m.
On 12/16/2012 01:22 PM, David Ryskalczyk wrote:
In his own words:
http://www.semiconductormuseum.com/Transistors/LectureHall/Camenzind/Camenz…
I'd read that before and Hans' son Peter backs that up. But what was
the thought process behind choosing "555"? Was it the notion of "triple
nickel". The marketing types I knew back then would certainly have
thought that way...
I guess we'll never really know the "story behind the story"
--Chuck
How did
the 555 name come about?
Signetics had ?500? numbers, and the earlier product I
worked on
was the 565, 566 and 567. It was just arbitrarily chosen. It was
Art Fury (Marketing Manager) who thought the circuit was gonna
sell big who picked the name ?555?. 
2:15 p.m.
On Sun, 16 Dec 2012, Chuck Guzis wrote:
I'd read that before and Hans' son Peter backs
that up. But what was
the thought process behind choosing "555"? Was it the notion of "triple
nickel". The marketing types I knew back then would certainly have
thought that way...
I guess we'll never really know the "story behind the story"
"Damn! Someday, we gotta bild a circuit to do better key debouncing!"
2:28 p.m.
On 12/16/2012 04:43 PM, Chuck Guzis wrote:
http://www.semiconductormuseum.com/Transistors/LectureHall/Camenzind/Camenz…
I'd read that before and Hans' son Peter backs that up. But what was
the thought process behind choosing "555"? Was it the notion of "triple
nickel". The marketing types I knew back then would certainly have
thought that way...
I guess we'll never really know the "story behind the story"
I bet Camenzind had a Tek 555 on (or on a cart near) his bench! ;)
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
How did the
555 name come about?
Signetics had ?500? numbers, and the earlier product I worked
on
was the 565, 566 and 567. It was just arbitrarily chosen. It was
Art Fury (Marketing Manager) who thought the circuit was gonna
sell big who picked the name ?555?. 
11:14 p.m.
I have a 1972 Signetics Linear Integrated Circuits data book that has a two
page "New Product Advanced Information" data sheet in the 555 Timer. The 500
parts in the index are:
OP Amps 516, 531, 533, 536, 537
Voltage Regulators 550
Comparators 518, 526, 527, 529
Communications 501, 510, 511, 515, 592
Consumer 540, 555
Phase Locked Loops 560, 561, 562, 565, 566, 567
Michael Holley
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]
On Behalf Of Chuck Guzis
Sent: Sunday, December 16, 2012 1:43 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: NE555 story on ED
On 12/16/2012 01:22 PM, David Ryskalczyk wrote:
In his own words:
http://www.semiconductormuseum.com/Transistors/LectureHall/Camenzind/C
amenzind_Page2.htm
I'd read that before and Hans' son Peter backs that up. But what was the
thought process behind choosing "555"? Was it the notion of "triple
nickel". The marketing types I knew back then would certainly have thought
that way...
I guess we'll never really know the "story behind the story"
--Chuck
How did
the 555 name come about?
Signetics had "500" numbers, and the earlier
product I worked on was
the 565, 566 and 567. It was just arbitrarily chosen. It was Art
Fury (Marketing Manager) who thought the circuit was gonna sell big
who picked the name "555".
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