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Description
Nine Algorithms That Changed the Future: The Ingenious Ideas That Drive Today's ComputersNine revolutionary algorithms that power our computers and smartphones Every day, we use our computers to perform remarkable feats. A simple web search picks out a handful of relevant needles from the world's biggest haystack. Uploading a photo to Facebook transmits millions of pieces of information over numerous error prone network links, yet somehow a perfect copy of the photo arrives intact. Without even knowing it, we use public key cryptography
Nine revolutionary algorithms that power our computers and smartphones
Every day, we use our computers to perform remarkable feats. A simple web search picks out a handful of relevant needles from the world's biggest haystack. Uploading a photo to Facebook transmits millions of pieces of information over numerous error-prone network links, yet somehow a perfect copy of the photo arrives intact. Without even knowing it, we use public-key cryptography to transmit secret information like credit card numbers, and we use digital signatures to verify the identity of the websites we visit. How do our computers perform these tasks with such ease? John MacCormick answers this question in language anyone can understand, using vivid examples to explain the fundamental tricks behind nine computer algorithms that power our PCs, tablets, and smartphones.Binding Type: Paperback
Publisher: Princeton University Press
Published: 09/15/2020
ISBN: 9780691209067
Pages: 232
Weight: 0.55lbs
Size: 8.50h x 5.50w x 0.80d
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4.7 ★★★★★
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Product Reviews
★★★★★ 5
Sturdy & easy to move around
Its solid & sturdy. It does exactly what it’s supposed to. You have the option to fill it up with water or sand , I choose water. It holds the umbrella in place. The wheels and handle make it really easy to move around, which is a huge plus. It fits perfectly and feels very well made. Great addition for my pool area!
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Heavy-Duty Base with Convenient Mobility
This umbrella base does exactly what it’s supposed to—keeps the umbrella stable while still being easy to move around when needed. Once filled with water/sand, it feels solid and secure even on slightly windy days, which gives peace of mind.
The built-in wheels are a standout feature. Moving the base across the patio is smooth and doesn’t require much effort. The handle placement is well thought out, making repositioning quick and hassle-free.
Overall, it’s a great balance of stability and convenience. Highly recommend if you want a sturdy base without sacrificing mobility.
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Reviewed in the United States on March 31, 2026
★★★★★ 5
The base that fits!
Finally, easy to put together and the right fit just before summer. It was extra windy so I put extra weight.
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Holds up in high winds
Easy set up and holds umbrella in high winds
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Sturdy umbrella base
Sturdy umbrella base. Heavy duty and should not blow over in the wind. Will hold up for years.
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Reviewed in the United States on March 23, 2026