28 Mar
2022
28 Mar
'22
11:02 a.m.
Ethernet invented in 1973-74 at Xerox PARC in Palo Alto, CA, evolved over
many years.
This April 13th Webinar will trace the history and development of Ethernet
as a 10 Mb/s product up through the release of the DIX (DEC-Intel-Xerox)
spec in 1980. This was the starting point for the ongoing IEEE 802.3
Standard activities. Speakers include Gorden Bell, Dave Liddle, Bob Metcalfe
and seven other pioneers who were there for the transition.
More detail at <https://r6.ieee.org/sv-techhistory/?p=1030> SVTHC website
Register
<https://www.eventbrite.com/e/ethernets-emergence-from-xerox-parc-1975-1980-
tickets-301085664327>
Tom
28 Mar
28 Mar
11:09 a.m.
New subject: Webinar: Ethernet's Emergence from Xerox PARC: 1975-1980
For years I taught my students that the Ethernet was invented at the
University of Hawaii in 1971!
OK, it was wireless, but that brings up another surprise, that wireless
ethernet came before wired :-)
cheers,
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591
On 2022-03-28 14:02, Tom Gardner via cctalk wrote:
Ethernet invented in 1973-74 at Xerox PARC in Palo
Alto, CA, evolved over
many years.
This April 13th Webinar will trace the history and development of Ethernet
as a 10 Mb/s product up through the release of the DIX (DEC-Intel-Xerox)
spec in 1980. This was the starting point for the ongoing IEEE 802.3
Standard activities. Speakers include Gorden Bell, Dave Liddle, Bob Metcalfe
and seven other pioneers who were there for the transition.
More detail at<https://r6.ieee.org/sv-techhistory/?p=1030> SVTHC website
Register
<https://www.eventbrite.com/e/ethernets-emergence-from-xerox-parc-1975-1980-
tickets-301085664327>
Tom
11:12 a.m.
New subject: Webinar: Ethernet's Emergence from Xerox PARC: 1975-1980
That was the ALOHA network, which inspired Ethernet but was not Ethernet.
On Mon, Mar 28, 2022 at 11:09 AM Nigel Johnson Ham via cctalk <
cctalk at classiccmp.org> wrote:
For years I taught my students that the Ethernet was
invented at the
University of Hawaii in 1971!
OK, it was wireless, but that brings up another surprise, that wireless
ethernet came before wired :-)
cheers,
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591
On 2022-03-28 14:02, Tom Gardner via cctalk wrote:
Ethernet invented in 1973-74 at Xerox PARC in
Palo Alto, CA, evolved over
many years.
This April 13th Webinar will trace the history and development of
Ethernet
as a 10 Mb/s product up through the release of
the DIX (DEC-Intel-Xerox)
spec in 1980. This was the starting point for the ongoing IEEE 802.3
Standard activities. Speakers include Gorden Bell, Dave Liddle, Bob
Metcalfe
and seven other pioneers who were there for the
transition.
More detail at<https://r6.ieee.org/sv-techhistory/?p=1030> SVTHC
website
Register
<
https://www.eventbrite.com/e/ethernets-emergence-from-xerox-parc-1975-1980-
tickets-301085664327>
Tom
12:08 p.m.
New subject: Webinar: Ethernet's Emergence from Xerox PARC: 1975-1980
On Mar 28, 2022, at 2:12 PM, Joseph S. Barrera III via
cctalk <cctalk at classiccmp.org> wrote:
That was the ALOHA network, which inspired Ethernet but was not Ethernet.
The differences are quite crucial. ALOHA is a broadcast radio packet network, which
doesn't have collision detect and probably not carrier sense either. So it's
about 1/3rd of Ethernet -- just MA. :-) A consequence is that the theoretical channel
capacity is also about 1/3rd; ALOHA tops out around 30% of data rate, while Ethernet --
thanks to CS and CD -- can reach pretty much the full wire capacity.
paul
3:41 p.m.
New subject: Webinar: Ethernet's Emergence from Xerox PARC: 1975-1980
On 3/28/22 12:09 PM, Nigel Johnson Ham via cctalk wrote:
OK, it was wireless, but that brings up another
surprise, that wireless
ethernet came before wired :-)
As others have indicated, I think not. ;-)
I recently watched the following videos of Bob Metcalfe:
- Link - Ethernet Briefings in April 1978 by Bob Metcalfe (112 minutes)
- https://youtu.be/Fj7r3vYAjGY
And the follow up:
- Link - Metcalfe's Law After 40 Years of Ethernet (19 minutes)
- https://youtu.be/f6CJA421aUo
The Ethernet Briefings video goes into fairly good detail comparing and
contrasting ALOHA net and Ethernet.
--
Grant. . . .
unix || die
1000
days inactive
1000
days old
4 comments
5 participants
participants (5)
-
cctalk＠gtaylor.tnetconsulting.net -
g4ajq1＠gmail.com -
joe＠barrera.org -
paulkoning＠comcast.net -
tom94022＠comcast.net