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Who invented the hard drive?

Who invented the hard drive?

Who invented the hard drive?

Like many innovations in 20th-century computing, hard drives were invented at IBM as a way to give computers a rapidly accessible “random-access” memory. The trouble with other computer memory devices, like punched cards and reels of magnetic tape, is that they can only be accessed serially (in order, from beginning to end), so if the bit of data you want to retrieve is somewhere in the middle of your tape, you have to read or scan through the entire thing, fairly slowly, to find the thing you want. Everything is much faster with a hard drive, which can move its read-write head very quickly from one part of the disk to another; any part of the disk can be accessed as easily as any other part. The first hard drive was developed by IBM’s Reynold B. Johnson and announced on September 4, 1956 as the IBM 350 Disk Storage Unit.

IBM engineers also pioneered floppy disks, which were removable magnetic disks packed in robust plastic cases (originally 20cm or 8in in diameter and wrapped in flexible plastic sleeves; later 133mm or 5.25in in diameter and packed in tough plastic cases). Developed by IBM’s Warren Dalziel in 1967 and first sold in 1971, they became hugely popular in microcomputers (the forerunners of PCs) in the late 1970s and early 1980s, but are now obsolete. With a storage capacity of only 1.44MB, they’ve been completely superseded by USB flash “drives” that offer hundreds or thousands of times more memory in a tiny plastic stick a fraction the size.

Artwork: The original hard drive. IBM engineers developed this groundbreaking magnetic memory (which, in IBM-speak, was called the DASD, pronounced “das-dee”), through a process of continuous improvement from the early 1950s onward and were awarded their final patent on the design in 1970. You can see that the basic read-write mechanism is exactly the same as in today’s drives: there are multiple platters (light blue) made up of individual sectors (dark blue) that can be written to or read from by multiple read-write heads (red) mounted on the ends of sliding actuators (orange). The platters are spun by a pulley and motor (green), while the actuators are driven by gears and a motor (yellow). The main difference between this drive and a modern one is the amazing amount of intricate machinery this one contained (which you can read all about in the original patent). From US Patent 3,503,060: Direct access magnetic disc storage device by William Goddard and John Lynott, IBM Corporation, March 24, 1970, courtesy of US Patent and Trademark Office, with colors added for clarity.

ibm-dasd-hard-drive-patent

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What Is Thunderbolt 3?

What Is Thunderbolt 3?

What Is Thunderbolt 3?
Thunderbolt 3 ports look exactly the same as USB-C ports, and indeed, the connector is physically the same from a plug-in perspective. In many cases, they can do everything that a USB-C port can, except much faster. Indeed, Thunderbolt 3 is a superset of USB-C; you can plug a USB-C-only device into a Thunderbolt 3 port on a computer, and it’ll work just fine.

Thunderbolt 3 lets you transfer data at up to 40Gbps. That’s twice as fast as the 20Gbps maximum throughput speed of the fastest USB-C ports, and four times as fast as the original Thunderbolt interface.

What Is Thunderbolt 3?
Not only can a Thunderbolt 3 port help you transfer data to and from a compliant external hard drive more quickly than a plain USB-C port, but it can also unlock additional capabilities for connecting external monitors and expansion docks. A USB-C port with support for Thunderbolt 3 means that a single cable is all you need to push power and transfer a large amount of information (such as video data for two or more 60Hz 4K external monitors) to and from a computer.
Some companies have been quick to take advantage of these capabilities. Apple was among the earliest adopters of Thunderbolt 3 for computers, and now these ports are available on all late-model Mac desktops and laptops. Video-output capabilities depend on the system, but some iMacs can now support dual 6K Apple Pro Display XDR external monitors connected via Thunderbolt 3 cables.
More and more Windows PCs and peripherals are now coming with Thunderbolt 3 support, as well. You’ll find Thunderbolt 3 ports on many late-model premium ultraportable laptops, as well as a growing selection of external hard drives and expansion docks.

As noted above, Thunderbolt 3 ports on PCs are backward-compatible with USB-C devices. So, if you’ve got some peripherals that support Thunderbolt 3 and some that support only USB-C, they should both be able to work just fine on a Thunderbolt 3 port, albeit (in the case of the USB-C peripherals) limited by the slower speeds and capabilities of the USB-only device.

Source: PCMag

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Which Chromebook Should I Buy?

Which Chromebook Should I Buy?

Which Chromebook Should I Buy?

Whether you’re a Facebook addict or you just need a machine for checking email and working in Google apps, Chromebooks are easy to use, convenient to take on the go, and inexpensive. If you think a Chrome OS laptop is right for you, check out the reviews below for the top-rated Chromebooks that PCMag.com has tested.

THE BEST FOR WORD PROCESSING
Acer Chromebook Spin 713 at BestBuy.com

THE BEST FOR STUDENTS
Asus Chromebook C523 at BestBuy.com

THE BEST FOR BUSINESS USERS RELIANT ON G-SUITE APPS
Acer Chromebook 714 at Acer.com

THE BEST FOR AROUND-THE-HOUSE STREAMING
HP Chromebook 15 (2019) at HP.com

THE BEST FOR SECURE ENTERPRISE DEPLOYMENTS
Dell Latitude 5300 2-in-1 Chromebook Enterprise at Dell.com

THE BEST FOR FREQUENT TRAVELERS
Google Pixelbook Go at BestBuy.com

THE BEST FOR SEEKERS OF AN ELEGANT, INEXPENSIVE BUDGET 2-IN-1
HP Chromebook x360 12b at HP.com

Source: PCMag

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Which Gaming Keyboard Should I Buy?

Which Gaming Keyboard Should I Buy?

Which Gaming Keyboard Should I Buy?

Check below for the best gaming boards that was tested by PCMag.com. Most are classic mechanical-switch models, but a few use alternate key types, so check the reviews for the details.

THE BEST FOR ESPORTS PLAYERS SEEKING A TENKEYLESS DESIGN
SteelSeries Apex 7 TKL at Walmart.com

THE BEST FOR NO-NONSENSE MECHANICAL-KEYBOARD BUFFS
HyperX Alloy Origins at Amazon.com

THE BEST FOR ERGONOMICALLY MINDED GAMERS
Kinesis Freestyle Edge RGB Split Mechanical Gaming Keyboard at Amazon.com

THE BEST FOR RGB BUFFS WITH LIMITED DESK SPACE
Asus ROG Strix Scope TKL Electro Punk at Aorama.com

THE BEST FOR SERIOUS FANS OF LOW-PROFILE SWITCHES
Logitech G915 Lightspeed Wireless Mechanical Keyboard at BestBuy.com

THE BEST FOR EXTREME TWEAKERS, KEY-SWITCH CONNOISSEURS
Logitech Pro X at Logictech.com

THE BEST FOR ESPORTS HOUNDS
Razer Huntsman Tournament Edition at Amazon.com

THE BEST FOR FAST-ACTION GAMERS
Roccat Vulcan 120 AIMO at BestBuy.com

THE BEST FOR FANS OF A CLASSIC RAZER DESIGN
Razer Ornata V2 at Razer.com

Source: PCMag

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WordPress 5.5.1 is now available!

WordPress 5.5.1 is now available!

WordPress 5.5.1 is now available!

 This maintenance release features 34 bug fixes, 5 enhancements, and 5 bug fixes for the block editor. These bugs affect WordPress version 5.5, so you’ll want to upgrade.

You can download WordPress 5.5.1 directly, or visit the Dashboard → Updates screen and click Update Now. If your sites support automatic background updates, they’ve already started the update process.

WordPress 5.5.1 is a short-cycle maintenance release. The next major release will be version 5.6.

To see a full list of changes, you can browse the list on Trac, read the 5.5.1 RC1 and 5.5.1 RC2 posts, or visit the 5.5.1 documentation page.

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WooCommerce vs. Shopify: Which eCommerce platform is right for your business?

WooCommerce vs. Shopify: Which eCommerce platform is right for your business?

WooCommerce vs. Shopify: Which eCommerce platform is right for your business?
Whether you’re just entering the world of online retail, or you’ve been selling on Walmart, Amazon, and eBay for years, launching your own eCommerce website is an exciting step. It’s also a difficult one.

Deciding whether WooCommerce vs. Shopify is best for your business and customers is a challenging decision to make – but one that gets lot easier when you know the facts.

However, depending on your type of business, you may have other considerations such as accounting, subscription models, or even international stores.

Once you’ve identified your basic requirements, it’s time to start examining whether WooCommerce vs. Shopify meets those needs. Let’s take a look.

An overview of WooCommerce vs. Shopify

WooCommerce and Shopify are among the top most popular eCommerce platforms out there and are used worldwide to build professional and successful eCommerce websites.

Shopify is an all-in-one platform, which means that you can use it to create an online store, accept payments, manage orders, and control your inventory from a single dashboard. You simply select a pre-built theme, start customizing, and away you go.

WooCommerce is an open-sourced eCommerce platform that operates as a WordPress plugin. This means that it’s entirely customizable for your needs, allowing you – or your developer – to build and run a tailored online store for your customers.

woocommerce-online-shopify-ecommerce-pcexpertservices
So which platform is better for you? If you’re a first-time store builder looking to quickly get set up, featured on Google, and making sales, Shopify is a perfect fit. If you require advanced functionality, customization, and room for significant growth, then WooCommerce or Shopify Plus is best suited to your needs.

Source: deliverr

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