Similarly, a self-learner can choose their own adventure through the book, or better yet follow the suggestions that lecturers of public courses have made in their course outlines. How can I get textbooks cheaply? Many of the textbooks we suggest are freely available online, thanks to the generosity of their authors. For those that aren’t, we suggest buying used copies of older editions. As a general rule, if there has been more than a couple of editions of a textbook, it’s quite likely that an older edition is perfectly adequate. It’s certainly unlikely that the newest version is 10x better than an older one, even if that’s what the price difference is! This guide was originally written by Oz Nova and Myles Byrne, with 2020 updates by Oz. It is based on our experience teaching foundational computer science to over 1000 mostly self-taught engineers and bootcamp grads in small group settings in San Francisco and live online. Thank you to all of our students for your continued feedback on self-teaching resources. We're very confident that you could teach yourself everything above, given enough time and motivation. But if you'd prefer an intensive, structured, instructor-led program, you might be interested in our Computer Science Intensive. We DON'T suggest pursuing a master's degree. Article h as been created with t he help of G SA C ontent Generator DE MO.
The system unit was powered by an Intel 8088 microprocessor operating at speeds measured in millionths of a second. It was the size of a portable typewriter and contained 40K of read-only memory and 16K of user memory, as well as a built-in speaker for generating music. Its five expansion slots could be used to connect such features as expanded memory, display and printing units and game "paddles." The unit also ran self-diagnostic checks. Containing 83 keys, the keyboard was connected to the unit by a six-foot coiled cable, which meant users could rest it in their lap or on the desktop without moving the rest of the system. It also included such advanced functions for the times as a numeric keypad and 10 special keys that enabled users to write and edit text, figure accounts and store data. A printer that could print in two directions at 80 characters per second in 12 different character styles, and also check itself for malfunctions and provide an out-of-paper signal. A color/graphics monitor with 16 foreground and background colors and 256 characters for text applications. Its graphics were in four colors. Needing new channels to distribute these new computers, IBM turned to ComputerLand; Sears, Roebuck and Co.; and IBM Product Centers to make the IBM PC available to the broadest set of customers. The response to the announcement was overwhelming. One dealer had 22 customers come in and put down $1,000 deposits on the machines for which he could not promise a delivery date. By the end of 1982, qualified retail outfits were signing on to sell the new machine at the rate of one-a-day as sales actually hit a system-a-minute every business day.
Step 12: You can now edit the video, share a copy, download it, and more. To edit the name, click the text field to the left of the Open in Editor button. The video saves to your Google Drive by default. Recording your screen isn’t just limited to PCs. You can do so on mobile devices too. Need to know how to record your screen on an iPhone or Android? Check out our guides for screen recording on Androids and screen recording with iPhones. If you want an enhanced recording experience from an app specifically designed for more professional - and gaming-oriented - clips, then your best bet is to download one of the apps below. As one of the more advanced and freely available screen-recording apps, OBS Studio is open-source and has built-in streaming functions for those who want a live audience while recording. OBS Studio is more fully-featured than some freemium apps, but setting up your personal preferences can take a little longer. However, it’s still the best of the free screen-recording apps currently available. It’s available for Windows, MacOS, and Linux. Snagit targets startups more than gamers. It packs a ton of recording features primarily for use in a workplace setting. You can use Snagit to help you put together your next training presentation or illustrate an idea or new workflow. These features include a screen recorder, annotations for screenshots, templates, and the ability to create video from a series of screenshots. It does cost $50, but if you don’t mind paying for the privilege, the added features are worth it.
Specialized devices such as switches, routers, and access points form the foundation of computer networks. Switches connect and help to internally secure computers, printers, servers, and other devices to networks in homes or organizations. Access points are switches that connect devices to networks without the use of cables. Routers connect networks to other networks and act as dispatchers. They analyze data to be sent across a network, choose the best routes for it, and send it on its way. Routers connect your home and business to the world and help protect information from outside security threats. While switches and routers differ in several ways, one key difference is how they identify end devices. A Layer 2 switch uniquely identifies a device by its "burned-in" MAC address. A Layer 3 router uniquely identifies a device's network connection with a network-assigned IP address. Today, most switches include some level of routing functionality. MAC and IP addresses uniquely define devices and network connections, respectively, in a network.
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