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How A CPU (Central Processing Unit) Works !

Hi, we'll be discussing classical computing, more specifically - how the CPU operates and CPU parallelism. [Music] In the previous video in this series we discussed the shrinking of the transistor, allowing for more powerful and efficient computers, as well as the end of Moore's Law based on the miniaturization of the transistor within the next seven to ten years. Be sure to check it out for some background context for this video. Now in that video when referring to computing performance, we were focused on classical computing based on the CPU.

Classical computing, is essentially the digital computer, almost every computing device on the market today is a classical computer. Classical computers operate in serial, in other words, as mentioned in the first video in the series, Computing Origins, executing various instructions extremely fast in 'order', but to the average user it appears to be running them in parallel, meaning multiple instructions at a time. This is du…

10 Best Hidden/Cool Features Of Google (You Must Know)

Google, we use it all the time, probably even every day. And Google obviously isn't just a search engine,they have a ton of other projects that are really awesome that you've probably never even heard of. So in this video I'm going to tell you about 10 cool features and services by Google that I bet you didn't know existed. And these won't really be in any particular order. Let's jump right in.

Feature No. 1


Starting off, we have a feature built right into Google search, which basically lets you use Google as a proxy. All you have to do is type in the search box,"Cache:WhateverWebsite.com". This will take you directly to Google's cached version of the site. As you may or may not know, Google takes acache of all the websites it indexes for search, and in regular search you can usually click the down arrow next to a result to go to it. But with this, you don't have to look through  the results to find the right page you want to access. And this cached version can be useful in a lot of situations. Like if you're behind a firewall at school or work that is blocking the website. You obviously can't log into the site because it's just a static page, but at least you can see it. Another reason might be if the website is down or taking forever to load, you can look at the cached version to see what was on it. And it will tell you at the top what time the cache was taken, which is usually pretty recent.

Feature No. 2


Next up is another basic feature you can doin the search, which is tracking flight status. All you do is do a search for the name of the flight, like "Flight 999" which is apparently a real flight, and it will bring up all sorts of information. You'll see the departure and destination locations obviously, when it departed, when it's going to arrive, and a little plane symbol to show the current progress. And if the flight has multiple legs, or you want to look at it for another day, you can look that up too. So it's really just a neat little feature maybe if you're waiting for a flight, or want to check on a friend's progress.

Feature No. 3


Number three is for Gmail, and it's a feature that makes replying to some emails a lot easier. It's not enabled by default, so you want to go to Gmail settings, then the Labs tab, and look for the one that says "Quote Selected Text" and click enable, then save changes. What this does is allows you to quote only part of an email instead of the whole thing when replying to an email. You just highlight a certain portion of any email with your mouse, and then click the reply button as usual. And now you'll see that it displays a quotejust for what you've highlighted. Could be a good way to avoid accumulating huge email unnecessary email chains.

Feature No. 4


Moving on, Number 4. I'm sure you all know about Google Maps, and Google Earth, but did you know about Google Sky? Yes, it's a thing, just go to Google.com/skyand you'll see what I'm talking about. It's a really cool page that lets you explore the entire night sky just like you might with Google maps. You can zoom in pretty far, and you'll notice in some spots there are images that are higher resolution than the surrounding areas. But that's not the only way you can look atthe night sky, because it also has options to view in Infrared, Microwave, and even Historical images. With Infrared and Microwave it's especially cool because you're able to see parts of the light spectrum beyond regular visible light,and it looks awesome. You can even adjust the opacity so it just overlays the view a little bit, and you're still able to see the regular view. And with the historical view, it's pretty funny, you can get a look at how the stars were mapped hundreds of years ago, with all the constellations drawn out as animals and objects. Very strange and interesting at the same time.

Feature No. 5


Alright next up, is a neat Google Project called "Project Sunroof", and the purpose is to help you figure out if maybe you should consider getting a solar panel. You type in your address, and it will show you all sorts of useful information. Like how many hours of usable sunlight your location has per year to generate electricity, and based on satellite imagery, how much space it thinks you have to place a solar panel. Even if you don't plan to get a solar panel,it is still pretty interesting to see. It will show you how much you might save by getting on based on your current electric bill, and how much it might cost to actually get one. This is apparently not available in all locations,but even if it isn't for you, they still have a few sample addresses you can choose to at least see the basic idea. And just looking at the map is cool, because it shows you exactly what parts of the roof get the most sunlight, and where is the most shade, so you even know exactly where you'd put it. Not something I see myself doing, but still super cool.

Feature No. 6


Alright, number 6 is the "Google Public Data Explorer", which is a service that does exactly as the name suggests. You just click "Explore the data", on the left you'll see a huge list of statistics you can search through and graph. And it lets you display the information in all sorts of ways, whether it's a bubble graph, or on a map, bar graph, or line graph. And below the graphs you can even use the slider to change the time frame, to see how the data has changed over time. Using can be a bit confusing but it doesn't just let you look at a statistic one at a time. It also lets you compare any two, even if they don't make much sense. For example, I can pick a random value for the Y axis like, the deposit interest rate, and for the X axis, the total surface area of the country. Obviously this is ridiculous, but you get the idea. Then you can also change what the size and color of the circles represent in the bubble graph. By default circle size is population and coloris region. So needless to say, you could easily kill some hours on this site.

Feature No. 7


Moving on, we have another one for you data junkies out there called Google "nGram" Viewer. This one is a lot easier to understand than the previous one, and pretty much all it does is show you how often certain phrases has appeared in books and publications throughout history. For example, you might think the phrase "what'sup" is a relatively modern thing to say, but if we type that in, you can see that people have been saying that even since the 1800s! You can also change the time frame to anything between way back in 1500 through 2008. Some of the results are actually pretty surprising. For example, if we type in WTF and search between 1900 and today, apparently that's been around for a while. And if you go back to 1500... Whoa! What the  happened in 1650? Our usage of WTF barely even registers on the chart! Now I think it's pretty obvious whatever they meant by WTF back then was a lot different than today, but still funny to see weird anomalies like that, and just mess around with it.

Feature No. 8


Ok, number 8 is a relatively new service that Google is actually starting to push recently, called "Google Express". And it seems like they made it to be some sort of Amazon competitor. The main idea is you use Google Express to order stuff from their partner retailers all through this site, and then they ship it straight to you within a couple days. And there's apparently same day shipping in some areas too. Right now the selection of stores is pretty limited, so I don't see myself using this too often if at all. But I think it could be a good alternative maybe if Amazon doesn't have something but a local store does. Unfortunately shipping isn't free unless you pay for a Google Express membership, which is 10 bucks a month or 95 a year. I personally think that's way too much for such a small number of stores, and even fewer that I'd even go to, especially since AmazonPrime is about the same price. Still, might be something you're interested in.

Feature No. 9


Alright coming near the end we have a couple apps by Google that you might not have heard of. So number 9 is the "Google Goggles" app, where you point your camera at any object in front of you, and Google will analyze it, try to figure out what it is, and maybe display some extra information too. Unfortunately it seems like the the live camera view function is broken, and the app hasn't even been updated since 2014. But I was able to get it to work with already existing photos you pick from your gallery, so that's good. Maybe if you have an older phone it will allwork. Also, I bet this app is going to be replaced by the upcoming "Google Lens" that Google announced this year, so be on the look out for that.

Feature No.  10


And finally, we have Google's "Crowdsource"app. This app was made to help train Google's Artificial Intelligence by asking humans about stuff it doesn't know. I wouldn't say it's particularly useful, butit is a bit amusing and can kill some time if you're really bored. There are a bunch of catagories, one example being Handwriting Recognition, where you try to identify what the heck someone was trying to write. Another interesting one is "sentiment evaluation",where it gives you a bit of text and you just have to identify whether the text is happy,unhappy, or neutral. Reading these are actually kinda funny because it seems like they're taken from online reviews, because half of them are complaints about random products and apps. Once you do enough tasks in a catagory, you actually "level up" and get a participation ribbon. Completely useless but might make you feel like you accomplished something. So, that's about it. 10 cool Google features you probably had no idea existed, or at least a few of them. If I missed anything, feel free to let ask now in the comments below. If you want to keep watching, here are a couple other videos you'll like, such as a list of cool free windows programs, you can just click on those. And if you want to subscribe, I make new videos tuesday, thursday, saturday. Looking forward to hearing from you guys,so thanks for watching, I'll see you next time, have a good one.

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Classical computing, is essentially the digital computer, almost every computing device on the market today is a classical computer. Classical computers operate in serial, in other words, as mentioned in the first video in the series, Computing Origins, executing various instructions extremely fast in 'order', but to the average user it appears to be running them in parallel, meaning multiple instructions at a time. This is du…

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