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#alohanet

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Bundesamt für Strahlenschutz<p>Die Universität von Hawaii schrieb 1970 mit dem <a href="https://social.bund.de/tags/ALOHAnet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALOHAnet</span></a> Geschichte. Dieses innovative Netzwerk nutzte UHF-Radiowellen (Ultra High Frequency) für die Kommunikation.</p>
Chuck Darwin<p><a href="https://c.im/tags/ACM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ACM</span></a> named <a href="https://c.im/tags/Robert" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Robert</span></a> <a href="https://c.im/tags/Metcalfe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Metcalfe</span></a> recipient of the 2022 ACM A.M. <a href="https://c.im/tags/Turing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Turing</span></a> <a href="https://c.im/tags/Award" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Award</span></a> for leading the invention, standardization, and commercialization of <a href="https://c.im/tags/Ethernet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Ethernet</span></a> local-area networking technology. </p><p>Metcalfe is Emeritus Professor of Electrical and Computer Engineering (ECE) at The University of Texas at Austin.</p><p>In 1973, while a Research Scientist at the Xerox Palo Alto Research Center ( <a href="https://c.im/tags/PARC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PARC</span></a> ), Metcalfe circulated a now-famous memo on May 22, 1973 describing a "broadcast communication network" for connecting some of the first personal computers, <a href="https://c.im/tags/Altos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Altos</span></a>, within a single building. </p><p>The first Ethernet ran at 2.94 megabit per second, which was ~10,000 times faster than the terminal networks it replaced starting in 1973. </p><p>Although the original design proposed implementing this network over <a href="https://c.im/tags/coaxial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>coaxial</span></a> <a href="https://c.im/tags/cable" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cable</span></a>, the memo envisioned "communication over an <a href="https://c.im/tags/ether" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ether</span></a>" making the design adaptable to any future innovation in media technology including legacy telephone twisted pair, optical fiber, radio, and even power networks, to replace the coaxial cable as the "ether". That memo laid the groundwork for what we now know today as Ethernet.</p><p>The Ethernet architecture was developed to address Xerox's need to connect 100 of the new Alto personal computers and their new laser printers. The original architecture was based on a single wire bus with a single transceiver per node, thus enabling a cost-effective design. </p><p>The media access control in the Ethernet design incorporated Metcalfe's insights from his experience with Norm Abramson's RIP <a href="https://c.im/tags/ALOHAnet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALOHAnet</span></a>. </p><p>Metcalfe recruited David Boggs RIP to help build a 100-node Ethernet in two years. That first Ethernet was then replicated within Xerox to proliferate a corporate internet. </p><p>Metcalfe and Boggs' classic 1976 CACM article, "Ethernet: Distributed Packet Switching for Local Computer Networks," described the design of Ethernet. Metcalfe then led a team that developed the 10Mbps Ethernet, deployed internally at Xerox and forming the basis of subsequent standards.<br><a href="https://awards.acm.org/award-recipients/metcalfe_3968158#" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">awards.acm.org/award-recipient</span><span class="invisible">s/metcalfe_3968158#</span></a></p>
Canaima GNU/Linux<p><a href="https://mstdn.social/tags/TeLoContamos" class="mention hashtag" rel="tag">#<span>TeLoContamos</span></a> </p><p>Un día como hoy <a href="https://mstdn.social/tags/1Abril" class="mention hashtag" rel="tag">#<span>1Abril</span></a> de 1932, nació Norman Abramson.</p><p>Creador de la primera <a href="https://mstdn.social/tags/LAN" class="mention hashtag" rel="tag">#<span>LAN</span></a> inalámbrica.</p><p>Dato curioso: Las estructuras de su desarrollo <a href="https://mstdn.social/tags/ALOHAnet" class="mention hashtag" rel="tag">#<span>ALOHAnet</span></a> son usadas actualmente en satélites, celulares y equipos de computación.</p><p>¿Lo sabías?</p><p><a href="https://mstdn.social/tags/Tecnologia" class="mention hashtag" rel="tag">#<span>Tecnologia</span></a></p>
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