Introducing Windows 11

Written By Panos Panay, Chief Product Officer, Windows + Devices
published June 24, 2021 

At a time when the PC is playing a more central role in our lives, Windows 11 is designed to bring you closer to what you love.

CLICK HERE TO WATCH WINDOWS 11 VIDEO

Windows has always existed to be a stage for the world’s innovation. It’s been the backbone of global businesses and where scrappy startups became household names. The web was born and grew up on Windows. It’s the place where many of us wrote our first email, played our first PC game and wrote our first line of code. Windows is the place people go to create, to connect, to learn and to achieve – a platform over a billion people today rely on.

The responsibility of designing for that many people is one we don’t take lightly. The past 18 months brought an incredible shift in how we used our PCs; we went from fitting the PC into our lives to trying to fit our whole lives into the PC. Our devices weren’t just where we went for meetings, classes and to get things done, but where we came to play games with friends, binge watch our favorite shows and, perhaps most meaningfully, connect with one another. In the process we found ourselves recreating the office banter, the hallway chatter, workouts, happy hours and holiday celebrations – digitally.

What was so powerful was the shift in the PC we saw and felt – from something practical and functional to something personal and emotional. This is what inspired us as we were building the next generation of Windows. To build you a place that feels familiar, where you can create, learn, play and most importantly, connect in all new ways.

Available at https://blogs.windows.com. Acceso el 8 de noviembre, 2021

Gigabit Ethernet

 In computer networking, Gigabit Ethernet (GbE or 1 GigE) is the term applied to transmitting Ethernet frames at a rate of a gigabit per second. The most popular variant 1000BASE-T is defined by the IEEE 802.3ab standard. It came into use in 1999, and has replaced Fast Ethernet in wired local networks due to its considerable speed improvement over Fast Ethernet, as well as its use of cables and equipment that are widely available, economical, and similar to previous standards.

History

Ethernet was the result of research conducted at Xerox PARC in the early 1970s, and later evolved into a widely implemented physical and link layer protocol. Fast Ethernet increased the speed from 10 to 100 megabits per second (Mbit/s). Gigabit Ethernet was the next iteration, increasing the speed to 1000 Mbit/s.

• The initial standard for Gigabit Ethernet was produced by the IEEE in June 1998 as IEEE 802.3z, and required optical fiber. 802.3z is commonly referred to as 1000BASE-X, where -X refers to either -CX, -SX, -LX, or (non-standard) -ZX. (For the history behind the "X" see Fast Ethernet § Nomenclature.)
• IEEE 802.3ab, ratified in 1999, defines Gigabit Ethernet transmission over unshielded twisted pair (UTP) category 5, 5e or 6 cabling, and became known as 1000BASE-T. With the ratification of 802.3ab, Gigabit Ethernet became a desktop technology as organizations could use their existing copper cabling infrastructure.
• IEEE 802.3ah, ratified in 2004, added two more gigabit fiber standards: 1000BASE-LX10 (which was already widely implemented as vendor-specific extension) and 1000BASE-BX10. This was part of a larger group of protocols known as Ethernet in the First Mile.

Initially, Gigabit Ethernet was deployed in high-capacity backbone network links (for instance, on a high-capacity campus network). In 2000, Apple's Power Mac G4 and PowerBook G4 were the first mass-produced personal computers to feature the 1000BASE-T connection. It quickly became a built-in feature in many other computers.

Half-duplex gigabit links connected through repeater hubs were part of the IEEE specification, but the specification is not updated anymore and full-duplex operation with switches is used exclusively.

                                                                                               Available at https://en.wikipedia.org. Acceso el 8 de noviembre, 2021.

What is a data flow diagram? (Actividades

 What is a data flow diagram?

A data flow diagram (DFD) maps out the flow of information for any process or system. It uses defined symbols like rectangles, circles and arrows, plus short text labels, to show data inputs, outputs, storage points and the routes between each destination. 

Data flowcharts can range from simple, even hand-drawn process overviews, to in-depth, multi-level DFDs that dig progressively deeper into how the data is handled. They can be used to analyze an existing system or model a new one. 

Like all the best diagrams and charts, a DFD can often visually “say” things that would be hard to explain in words, and they work for both technical and nontechnical audiences, from developer to CEO. That’s why DFDs remain so popular after all these years. While they work well for data flow software and systems, they are less applicable nowadays to visualizing interactive, real-time or database-oriented software or systems.

It's easy to understand the flow of data through systems with the right data flow diagram softwareThis guide provides everything you need to know about data flow diagrams, including definitions, history, and symbols and notations. You'll learn the different levels of a DFD, the difference between a logical and a physical DFD and tips for making a DFD.  

Available on https://www.lucidchart.com/pages/data-flow-diagram. Acceso el 1 de noviembre, 2020.

ACTIVIDADES

A- Responda las siguientes preguntas

1. ¿ Para qué sirve un diagrama de flujo?
2. ¿ Qué símbolos usa?
3. ¿ Cómo varían estos diagramas?
4. ¿ En qué se pueden usar?

B- Diga si las afirmaciones son verdaderas o falsas. Justifique las falsas.

1. Un diagrama de flujo muestra cosas visualmente.
2. No funcionan bien para sistemas de datos.
3. Son muy aplicables para sistemas en tiempo real.

C- Complete las oraciones siguientes:

1. It's easy to ...
2. This guide provides..
3.You'll learn ...