#datocurioso

¿Sabían que la dirección MAC originalmente proviene de un esquema de direccionamiento creado por Xerox para el sistema Ethernet?

Antes de convertirse en el estándar global gestionado por el IEEE, el identificador de 48 bits (conocido hoy como EUI-48) fue administrado inicialmente por la oficina de administración de Ethernet de Xerox Corporation durante la década de 1970. En aquel entonces, los identificadores se asignaban en bloques de 24 bits a las organizaciones, quienes a su vez definían los 24 bits restantes para identificar de manera única cada interfaz de hardware.

El diseño de 48 bits permite un espacio de direccionamiento de más de 281 billones de combinaciones únicas. Esta estructura se dividió en dos partes fundamentales: el Identificador Único de Organización (OUI), que corresponde a los primeros tres octetos e identifica al fabricante, y la parte específica del dispositivo asignada por dicho fabricante.

A medida que las tecnologías de red se estandarizaron a través del Proyecto 802, el IEEE asumió la responsabilidad de administrar estas direcciones para garantizar que no existieran duplicados en las redes locales a nivel mundial. Aunque términos como MAC-48 se consideran obsoletos en favor de EUI-48, el concepto de dirección física permanece como el pilar que permite la comunicación en la capa de enlace de datos del modelo OSI.

#MACAddress #Historia #Xerox #Ethernet #IEEE #Redes

yahoo news | Xerox Taps Louie Pastor As CEO After Steve Bandrowczak Steps Down

Xerox’s board of directors announced that Lou Pastor has been appointed chief executive officer, effective immediately, succeeding Steve Bandrowczak, who stepped down after a three‑and‑a‑half‑year tenure. Pastor, who joined Xerox in late 2018 as executive vice president and general counsel and later served as president and chief operating officer, was praised by Chairman Scott Letier for his operational discipline, strategic insight and deep familiarity with the company. The board expressed confidence that Pastor’s focus on execution will help Xerox sustain momentum and meet its strategic and financial goals.

Bandrowczak, a Xerox veteran of more than seven years, had been CEO since August 2022, taking over after the death of former chief John Videntin. During his leadership Xerox completed the acquisition of Lexmark (announced December 2024, closed July 1 2025) and purchased ITsavvy in October 2024 for $400 million. He also secured a $450 million joint‑venture investment with TPG, providing liquidity for general corporate purposes and the integration of Lexmark. Bandrowczak highlighted the company’s strengthened position and praised the resilience of the team before departing.

In its most recent fiscal report, Xerox reported FY 2025 revenue of $7.02 billion—up 12.9 % year over year—but a GAAP net loss of $1.03 billion, narrower than the prior year’s $1.32 billion loss. On a pro‑forma basis that includes Lexmark and ITsavvy, revenue fell 7.6 % for the year. The company also saw a reshuffle in its C‑suite, with Chuck Butler becoming CFO in December, and its workforce grew to roughly 22,900 employees by the end of 2025. Despite these moves, Xerox’s stock has declined 73 % over the past twelve months, trading around $1.30 per share with a market cap near $167 million.

Read more: https://www.crn.com/news/channel-news/2026/xerox-taps-louie-pastor-as-ceo-after-steve-bandrowczak-steps-down

#xerox #louiepastor #stevebandrowczak #lexmark #cfo

#RochesterNY #Rochester #NewYork is a minor city in the #USA (with a rich history: #SusanBAnthony, #FrederickDouglass, #Kodak, #Xerox, etc)

Here I was today in only an outlying suburb, of only a minor city, and the #NoKings turn out was huge

Selected #posters I captured today in the below thread. I had to cap it at 25 posts:

#cats #protest #caturday

#usa : #geschichte / #computer / #mythos / #apple / #microsoft / #xerox

Ich bin kein Computerfreak und dachte, ich hätte in ganz, ganz groben Zügen die Entwicklung des PCs erfasst - werde nun aber eines Besseren belehrt, wie‘s scheint.

Frage an die "Besserwisser": Stimmt es, dass offensichtlich Xerox die eigentliche PC-Startrampe war?

https://www.latimes.com/business/story/2026-03-24/inside-the-1979-silicon-valley-demo-that-made-apple-what-it-is-today

Hey Xerox

No I don't want to install Rosetta in order to update the firmware in my printer.

Thanks

#Xerox #tech

LED Printers: The Quiet Achievers You May Not Have Heard Of

https://fed.brid.gy/r/https://hackaday.com/2026/03/02/led-printers-the-quiet-achievers-you-may-not-have-heard-of/