Top products from r/computing

We found 20 product mentions on r/computing. We ranked the 76 resulting products by number of redditors who mentioned them. Here are the top 20.

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Top comments that mention products on r/computing:

u/[deleted] · 5 pointsr/computing

techexams.net has a pretty good community with a lot of great resources. I would start by going through their free stuff.

With that said, the Mike Meyers Network Plus guide is awesome. My wife used this guide as her sole study source and passed with a 884/900 with zero previous networking experience.

u/visionik · 1 pointr/computing

Yes as you said below, you really don't want a "mesh" network. That means something totally different.

You just want PoE access points that can do hand-of, which UniFI can do for sure. I use UniFI at my house and it's 100% worth it. Either of these will work:

https://www.amazon.com/Ubiquiti-Compact-802-11ac-Enterprise-UAP-NanoHD-US/dp/B07DWW3P6K/

https://www.amazon.com/Ubiquiti-Networks-UAP-AC-PRO-Access-Included/dp/B079DSW6XX/

but the first one (the NanoHD) is newer and supports 802.11ac wave2.

With unifi you really should go all-in with unifi equipment. That's when the system works best. I'd recommend this PoE switch:

https://www.amazon.com/Ubiquiti-Networks-Managed-Gigabit-US-8-150W/dp/B01DKXT4CI/

You get 8 ports of PoE ethernet and two SFP ports. You can turn the SFP ports into two more RJ45 gigabit ethernet ports (without PoE) with these:

https://www.amazon.com/gp/product/B01JUBXDPI/

Alternatively, if you need many more ports or want something rack-moutable, I'd use this switch:

https://www.amazon.com/Ubiquiti-Networks-US-16-150W-UniFi-Switch/dp/B01E46ATQ0/

You'll also need a computer that's always on somewhere in your house to run the UniFI controller software. The controller is how you configure and track everything. It's really light-weight, so it can just run in the background on a desktop or some old Mac or PC.

Alternatively you can just plug a "UniFI Cloud Key" controller into one of your PoE ports:

https://www.amazon.com/Ubiquiti-Secure-Controller-stand-Alone-Hardware/dp/B07BB4RGQD/

One caveat, if you use the cloud key make sure you back up your unifi database (on the controller) often. I've had them fail on me more than I like.

Finally, if you don't like any of those you can use a hosted instance of the cloud controller but it's $199 a year:

https://community.ubnt.com/t5/UniFi-Wireless/Announcing-UniFi-s-newest-Cloud-management-offering/td-p/1912538

u/Kayse · 3 pointsr/computing

Unfortunately, what you're suggesting (DC storage to AC intermediate "wall socket" power to DC use by the device) is a bit impractical and inefficient. Many power inverters (a device for turning DC current into AC), can have efficiencies down to 50% when you use them in a trickle mode to "top off" a battery and near 90% when you use the full rated capacity of the inverter. As well, most digital electronics use DC power internally, this AC power you just generated will have to be converted back into DC power. This process will also loss some of the energy as heat as well.

Taken together, this means that you will probably need about two to three times the amount of battery (with associated weight) to run your "universal charger".

What I would suggest would be to have a DC power source you can tie directly into your portable device without having to convert between AC and DC twice.

First: Many small portable devices will charge off of USB. USB is already DC and they make dozens of battery packs (some rechargeable) that will supply power to anything that can draw current from a USB cable. http://www.google.com/search?q=usb+battery+pack

Secondly, if you need to supply power to a portable device which cannot charge off of USB (such as a laptop), your best solution would be to buy a specific external battery/spare battery for your laptop, that you can recharge from or swap to. Most modern OSes can save their current state to the harddrive (e.g.: hibernation mode), so you can power down, swap batteries and power up in seconds.

Edit: Would something like this be what you're looking for: http://www.amazon.com/Energizer-XP18000-Universal-External-Netbooks/dp/B002K8M9HC

u/cbarrick · 2 pointsr/computing

Sipser's Introduction to the Theory of Computation is the standard textbook. The book is fairly small and quite well written, though it can be pretty dense at times. (Sipser is Dean of Science at MIT.)

You may need an introduction to discrete math before you get started. In my udergrad, I used Rosen's Discrete Mathematics and Its Applications. That book is very comprehensive, but that also means it's quite big.

Rosen is a great reference, while Sipser is more focused.

u/omfg · 3 pointsr/computing

Step 1: Familiarize yourself with C++ (yes C++, not C) from cplusplus.com. This step is free.

Step 2: Learn how to use Objective-C for iOS programming from this amazing book.

That should be all you need.

u/lordderplythethird · 1 pointr/computing

thank you. yeah i've basically figured I can just format my 2 3tb drives in exFAT, and then use something like this as a means of connecting my hdd to my friend's mac mini.

u/creontigone · 3 pointsr/computing

Continuing this Asus circle-jerk, I bought a laptop early this September. I researched my choice carefully and must say that I am very happy I chose Asus.

u/FlammusNonTimmus · 1 pointr/computing

Comptia A+ one of the best basic entry level certifications/books/trainings.

u/beeff · 5 pointsr/computing

The short answer is "because it doesn't increase performance".

The long answer involves the Von Neumann bottleneck, memory wall, power wall and ILP wall. For the long story I refer to the relevant chapter in Computer architecture: a quantitative approach

Adding more cores like we've been doing with multi-cores is a stop-gap measure, allowing manufacturers to keep claiming increased performance.

u/bw2002 · 1 pointr/computing

CCNA is worth getting, but whether it's worth the university cost is up to you.

I bought this book and will be doing it on my own. It comes with online videos, practice tests and labs.

http://www.amazon.com/gp/product/0956989292

u/goldfire · 2 pointsr/computing

If you can get another book, I would recommend this one; it is basically written to be the other book's only prerequisite, so it will take you through the language without assuming that you already know anything at all. As far as Internet tutorials, the first thing I found in a quick search that makes similarly few assumptions is this. There may be others, I'll try to look more later.

Keep in mind also that, if you want to write iOS applications, you're going to need either a Mac or some kind of hackintosh, because the tools you will need run only on Mac OS.

u/CTR1 · 1 pointr/computing

Based on what I read about your laptop on this link: http://www.amazon.com/Asus-K50IJ-C1-15-6-Inch-Laptop/dp/B002FU6BAQ , not sure if that is your exact model or not but have you/would you consider upgrading from Windows Vista to Windows 7. There were a ton of complaints against Vista and that may solve some issues or at the very least not bloat your computer.

There also may be an issue with your web browser, ie: chrome, firefox, internet explorer and/or some related software/plug ins?

People may be able to help more if you give more details regarding your setup and which specific model of the k50ij you have.

u/JonnyRocks · 1 pointr/computing

As others have noted, your question needs to be fleshed out but this book will answer your question regardless:

http://amzn.com/0735611319

u/eleitl · 1 pointr/computing

Should have run CAT 6e or even 6a to be future-proof. Cat 5 might or might not handle GBit/s.

You should have the devices connect to a central (GBit/s, no point in 100 MBit/s) somewhere, e.g. in your basement. There are fanless switches, in case noise is a problem. How many ports do you need? If it's 16 ports, I'd go for a http://www.amazon.com/HP-Procurve-1410-16G-Switch-J9560A/dp/B003QR1DBO/ -- if you need 8 ports, go with the http://www.amazon.com/HP-J9449A-ABA-Procurve-1810G-8/dp/B002NJUJ6G/ which is managed (you might not yet know what that is, but at some point you might want separate your networks into virtual segments, at which point you'll need VLAN capability).