The Cambridge Ring was an experimental local area network architecture developed at the Computer Laboratory, University of Cambridge starting in 1974 and continuing into the 1980s. It was a ring network with a theoretical limit of 255 nodes (though such a large number would have badly affected performance), around which cycled a fixed number of packets. Free packets would be "loaded" with data by a machine wishing to send, marked as received by the destination machine, and "unloaded" on return to the sender; thus in principle, there could be as many simultaneous senders as packets. The network ran over twin twisted-pair cabling (plus a fibre-optic section). There are strong similarities between the Cambridge Ring and an earlier ring network developed at Bell Labs based on a design by John R. Pierce. That network used T1 lines at bit rate of 1.544 MHz and accommodating 522 bit messages (data plus address). People associated with the project include Andy Hopper, David Wheeler, Maurice Wilkes, and Roger Needham. In 2002, the Computer Laboratory launched a graduate society called the Cambridge Computer Lab Ring named after the Cambridge Ring. (Wikipedia).
Ring Network - Intro to Algorithms
This video is part of an online course, Intro to Algorithms. Check out the course here: https://www.udacity.com/course/cs215.
From playlist Introduction to Algorithms
Abstract Algebra: The definition of a Ring
Learn the definition of a ring, one of the central objects in abstract algebra. We give several examples to illustrate this concept including matrices and polynomials. Be sure to subscribe so you don't miss new lessons from Socratica: http://bit.ly/1ixuu9W ♦♦♦♦♦♦♦♦♦♦ We recommend th
From playlist Abstract Algebra
1982 "Telephone Exchange" Origins of Electronic Switching Technology (telecom; central office)
Vintage 1982: This Excellent Telephone History documentary describes the development of telephone switching technology and the evolution of the "Telephone Exchange." A British Telecom educational film. (Slightly edited from the original, run time 17 mins.) A “TELEPHONE EXCHANGE” is a te
From playlist Vintage Telephone; AT&T; Bell Labs; Telecommunications; Satellites:
We're busy people who learn to code, then practice by building projects for nonprofits. Learn Full-stack JavaScript, build a portfolio, and get great references with our open source community. Join our community at https://freecodecamp.com Follow us on twitter: https://twitter.com/freecod
From playlist Networks
An intro to the core protocols of the Internet, including IPv4, TCP, UDP, and HTTP. Part of a larger series teaching programming. See codeschool.org
From playlist The Internet
Ring Definition (expanded) - Abstract Algebra
A ring is a commutative group under addition that has a second operation: multiplication. These generalize a wide variety of mathematical objects like the integers, polynomials, matrices, modular arithmetic, and more. In this video we will take an in depth look at the definition of a rin
From playlist Abstract Algebra
Number Theory: Part 2: Chinese Remainder Theorem
Chinese Remainder Theorem is presented. Discrete Logarithms are analyzed.
From playlist Network Security
What is Neural Network in Machine Learning | Neural Network Explained | Neural Network | Simplilearn
This video by Simplilearn is based on Neural Networks in Machine Learning. This Neural Network in Machine Learning Tutorial will cover the fundamentals of Neural Networks along with theoretical and practical demonstrations for a better learning experience 🔥Enroll for Free Machine Learning
From playlist Machine Learning Algorithms [2022 Updated]
A Short Course in Algebra and Number Theory - Rings
To supplement a course taught at The University of Queensland's School of Mathematics and Physics I present a very brief summary of algebra and number theory for those students who need to quickly refresh that material or fill in some gaps in their understanding. This is the second lectu
From playlist A Short Course in Algebra and Number Theory
Prof. Andy Hopper - The Cambridge Ring and the Computer Lab
Andy Hopper talks about the development of the Cambridge Ring network and also reflects on the Cambridge Computer Lab, its innovation and commercial successes and failures. Interview by The Centre for Computing History as part of the Heritage Lottery Funded 'Viva Computer' project.
From playlist Viva Computer!
SOURCE Boston 2008: Keynote Speaker - Richard Clarke
The Current State of the War on Terrorism and What it Means for Homeland Security and Technology. Richard A. Clarke is an internationally recognized expert on security, including homeland security, national security, cyber security, and counterterrorism. He is currently Chairman of Good H
From playlist SOURCE Boston 2008
Astronomy - Scientific Computing in the 60s
Four people from the University of Cambridge Institute of Astronomy talk about the practicalities of 1960s scientific computing using IBM/360 series computers.
From playlist Viva Computer!
Generational Random Graphs – Professor Jon Crowcroft
In this talk, Marconi Professor and Turing Faculty Fellow, Jon Crowcroft will present an idea based on a simple model for small-world-like graphs which are not characterised by a single parameter (for example, preferential attachment probability). Where other models for heterogeneity or ti
From playlist Turing Seminars
Turing: Pioneer of the Information Age
(May 2, 2012) Following a three minute introduction by Steven Ericsson-Zenith, Jack Copeland discusses Alan Turing's impact on information technology. Turing is often considered to be one of the greatest minds in the 20th century, and Copeland looks at how many of Turing's ideas lie behind
From playlist Engineering
23. A brief history of the Internet
MIT 6.02 Introduction to EECS II: Digital Communication Systems, Fall 2012 View the complete course: http://ocw.mit.edu/6-02F12 Instructor: Hari Balakrishnan This lecture offers a historical account of the development of the Internet and Internet Protocol (IP). The ideal case for area net
From playlist MIT 6.02 Introduction to EECS II: Digital Communication Systems, Fall 2012
22C3: Covert Communication in a Dark Network
Speakers: Ian Clarke, Oskar Sandberg A major new version of freenet At Defcon 13, we presented our ideas for creating scalable networks where only trusted friends speak directly to each other. In this talk, we will elaborate on this, discussing further experiments and results, as well as
From playlist 22C3: Private Investigations
Apple Is Not Your Friend - The Facebook Feud
Apple has benefited from Facebook data partnership for years. Their privacy grandstanding should be called into question. Join my channel and become a member to enjoy perks https://www.youtube.com/channel/UCjr2bPAyPV7t35MvcgT3W8Q/join Support me through Patreon: https://www.patreon.com/the
From playlist Decrypted Lies
Star Network - Intro to Algorithms
This video is part of an online course, Intro to Algorithms. Check out the course here: https://www.udacity.com/course/cs215.
From playlist Introduction to Algorithms
Mike Muller Interview - 2018 - Life, Acorn and ARM
Jason Fitzpatrick talks to Mike Muller about his career, life at Acorn and ARM and what it's like to be the CTO of one of the worlds leading tech companies.
From playlist Acorn and the ARM Processor