It may seem like your iPhone or Galaxy S7 is good for just about any task these days, but any mechanical engineering student, physics major or scientist might beg to differ. This type of machine is designed specifically to calculate programs and graph data in science, engineering and mathematics. Scientific calculators are still a big draw in secondary and higher education, in addition to the workplace. The top calculators handle complex functions, are comfortable and portable. They can be so specialized that you’ll rarely find one at a campus bookstore. We take a look at 10 great models that offer functionality and programmable features.  Scientific calculators are available at office supply stores, bookstores, variety stores or online, at marketplaces such as eBay.

1	Texas Instruments TI-84 Plus Graphing Calculator

Texas Instruments touts their TI-84 Plus Graphing Calculator as “perhaps the best-selling calculator of all time.” Indeed, it has thousands of reviews on the Internet, most of which are largely positive. This calculator comes with USB technology to share files with other computers, whether they are laptops or other scientific calculators. It also has pre-loaded apps, but with the capability of adding any TI-83 apps. The Texas Instruments TI-84 Plus Graphing Calculator should be suitable for students of science, finance, and other subjects that require advanced calculations. It is not solar-powered like many other calculators; instead, it takes AAA batteries and has a silver oxide battery as a backup.

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2	Texas Instruments TI-30Xa Scientific Calculator

The TI-30Xa Scientific Calculator is a basic model that performs trigonometric functions, logarithms, roots, powers, reciprocals, and factorials. The buyer sacrifices a plethora of features by prioritizing price, but this calculator may be more than enough machine depending on its intended use.

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3	Texas Instruments TI-83 Plus Graphing Calculator

Before it was outshone by the TI-84, the Texas Instruments TI-83 Plus Graphing Calculator dominated the scientific calculator market. It was often and highly recommended to students as the ultimate calculator for just about any need. It’s accepted for use in all standardized testing, and is great for trigonometry and algebra. It has an upgradeable operating system and software.

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4	Sharp EL-W516B Scientific Calculator

The Sharp EL-W516B is a relatively inexpensive scientific calculator, with a large four-line LCD display and programmable keys.  This model has hundreds of features, including more than 530 scientific programs and programmable macro keys. Its reviews are largely positive, with some customers singing the product’s praise after nearly a decade of use.

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5	HP 35s Scientific Calculator

The HP 35s Scientific Calculator is recommended by about 86 percent of people who review it. It has significantly fewer features than more expensive scientific calculators since HP designed it to commemorate its iconic H35 calculator from decades before. Simple in appearance, it’s an able performer with keystroke programmability. Some people report it is not easy to read, which could potentially be a problem for users with poor vision.

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6	HP 50g Graphing Calculator

Used by students and engineers, the HP50g Graphing Calculator sports a large, bright display rarely seen on regular scientific calculators. It is capable of vector operations, in addition to graphic, statistical, and electronic specifications. Although it is well reviewed, some users find its documentation lacking. The HP50g has a large equation library and over 2,300 built-in functions for geometry and math.

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7	Texas Instruments Voyage 200 Calculator

As one of Texas Instruments’ premium products, the Voyage 200 Calculator features a QWERTY keyboard and large LCD screen. The product is incredibly customizable, letting users calculate advanced math problems or even use applications to turn it into a flashcard device for foreign language, history or English classes. Students who want a high-quality calculator that is useful for just about any class can benefit from buying the Voyage 200.

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8	Texas Instruments TI-36X Pro Scientific Calculator

The Texas Instruments TI36X Pro is a scientific calculator for middle school to college students; more specifically, it is best for basic algebra up to college calculus. The unit is solar powered, so the student need not worry about batteries of any kind. The display may be difficult to read when lying on a desk, according to some descriptions of the product, so it is not well-suited for graphing functions.

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9	Sharp QS-2122H 12-Digit Commercial Desktop Calculator

Although technically a scientific calculator, Sharp’s QS-2122H 12-Digit Commercial Desktop Calculator is largely designed for business. It is capable of easing the calculations of markups, margins, and percent changes. Overall, it is a simple calculator with a clear display.

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10	TI-30XS MultiView Scientific Calculator

The TI-30XS MultiView Scientific Calculator is another inexpensive machine. Buyers are pleased with its ability to show variations of the same answer and previous answers. It is a non-graphing scientific calculator with a solar display. It is nowhere near as feature laden as the TI-83 or TI-84, but it should be sufficient for middle to high school students. Some buyers are dissatisfied with its simplicity. For example, it might not be suitable for an advanced high school math or physics class.

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Source: Top 10 Scientific Calculators | eBay

Hi Guys, i wanted to know how i can make a FULL backup of my wordpress sites. This includes the themes, the layouts, configurations, options that i changed in the theme as well as ll of the product, and setting i have changed for woocommerce. So basically if one day my hosting was to fail and i needed to change host etc… i want to know if i can make a backup that will allow me to go on any server and just simply upload the files and the website is back to where it was again. Is this possible? If so can yo

Source: Topic: How to fully Backup my site « WordPress.org Forums

Hello There Tom’s Hardware Community.Well ill Just give a brief intro about me .My Name is HussamIm a moderator on other website . I will not discuss it here . I know that is called Advertisement.Ok Coming to my point.I have a dell Optiplex 745 950 @ 3.4 GHz ; Pentium D { I know a bit old :P}. Recently i was checking threads about up-gradation of Optiplex 745 and was excited to see that some people suggested Q6600-6700 Quad Core .Therefore , My question is can we really up-grade it to Core 2 Quad Processor ? (Q6600-6700).My PC FSB max Speed is 1066 MHz

Source: Upgrading Optiplex 745 – [Solved] – CPUs – Tom’s Hardware

hey Guys, I am working on a Dell OptiPlex 745 and I have found that this machine hangs up every time I try to install Windows. I have changed the memory, hard rive and reseated the proc and the issue still continues. Even tried to flash the BIOS as I know Dell has a history with that but when I boot my Bart PE by the time I navigate to the file on my thumb drive the thing hangs again. the proc is a 64bit P4 and I a wondering if that could be the problem, as I am yet to find details on the processors that t

Source: Dell Optiplex 745 Hangs – Spiceworks

I have an optiplex 745 with 2GB of memory.I wanted to upgrade, so I used my service tag to find the correct memory for my machine and then I ordered the dell recommended memory for my machine.I got the memory but the machine won’t boot with it installed. I call tech support and they claim that they memory won’t work on my machine. I check dell.com, kingston, corsair and they all list 2GB 800Mhz memory for the optiplex 745 but when I read the docs for the 745 (every form factor) it says that it doesn’t support 2GB 800Mhz memory. Its weird dell recommends it for my machine and other companies all suggest 2GB 800Mhz for my machine. Anyone get this type of memory to work on this machine? The lady from dell recommended I exchange the 2GB for 2x1GB sticks instead, I only have 32-bit xp so I will only see 3-4GB of memory at the most.I have the latest bios 2.6.3 installed.

Source: Optiplex 745 supported memory options – General Hardware – Desktop – Dell Community

Source: bug reporting – What should I do when Ubuntu freezes? – Ask Ubuntu

If your Windows PC is throwing an error message at you before it even begins to load Windows, it’s possible that the boot sector on your system partition is damaged, corrupted, or has missing files. Here’s how to troubleshoot those problems.

Source: How to Repair Windows Bootloader Problems (If Your Computer Won’t Start)

At first, I am not liable for any harm or damage that may happen to your device! If you have su and didn’t trigger knox, I CANNOT guarantee that running this script won’t cause 0x1! Requirements: 1) P905/viennalte/Qualcomm based model ONLY (won’t work on Exynos devices. MIGHT work on other Qualcomm LTE deices from Note Pro and Tab Pro series or even S5 / Note 3 etc – feel free to repost but give credits AS THIS METHOD SEEMS TO BE COMPLETELY NEW! ) running 4.4.2 stock; 2) root access with SuperSU (using cf-

Source: [MOD][P905] selinux permissive on stock kern… | Samsung Galaxy Note Pro 12.2

Everyone ecxited about xposed framework released for lollipop.. But there are many facing problems installing framework because of SELinux set to enforce by default. You can check you Selinux status in settings – About phone You can set the SELinux to Permissive temporarily by running the bellow two commands in Terminal emulator su setenforce 0 But it SElinux will change to default once you hard reboot your phone.. In order to keep it in permissive, you need to soft reboot always whenever reboot need

Source: [How to] Set Selinux to permissive on boot

I get this instead when I try: android@Solarium:$ sudo -s sudo: PERM_ROOT: setresuid(0, -1, -1): Permission denied sudo: unable to initialize policy plugin android@Solarium:$ This is after selecting Debian unstable as my environment to install.

Source: Galaxy S6: Can’t sudo · Issue #224 · meefik/linuxdeploy · GitHub