Tagged With calculator

Predicting the future is near impossible -- but that doesn‘t stop us all from having a red hot go. Human beings have been predicting the future since the beginning of history and the results range from the hilarious to the downright uncanny.

One thing all future predictions have in common: they‘re rooted in our current understanding of how the world works. It‘s difficult to escape that mindset. We have no idea how technology will evolve, so our ideas are connected to the technology of today.


The hotter it is, the slower you run -- but humidity plays a role too. When the air is full of moisture, sweating doesn't cool you down like it usually would. You won't be able to run as fast, because your body is trying to prevent you from overheating.


Mac OS X only: Mac users envious of Windows 7's new souped-up built-in calculator can take solace in Magic Number Machine, a free, advanced graphic calculator for OS X. Features include 25 digits of precision, hexadecimal, binary, decimal and octal display including fractional, scientific notation and negative numbers in each, complex numbers, array functions, and a whole menu of scientific constants. It's been a long time since I've needed a calculator this advanced and complex, so mathletes and scientists, let us know how it is. The Magic Number Machine is a free download for Mac only. Thanks, enderwiggin7!

Magic Number Machine


Windows Vista only: We took a liking last week to the Windows 7 calculator and its many uses for serious mathletes, as well its templates for calculating mortgages, salaries, and other real-world numbers. Now you can get that same power on your Windows Vista system, thanks to (we presume) one intrepid hacker who pulled it out of the Windows 7 preview. You can run it as a no-install app or make it your system's default calculator, as the Daily Gyan blog explains in the via link below, but you'll want to back up your original calculator first. The files are shared through Box.net at the moment, and may get pulled down if traffic gets heavy (or a certain development firm gets antsy); we'd appreciate any alternate links in the comments. The Windows 7 Calculator is a free download for Windows Vista systems only. For a deeper look at other Windows 7 utilities, check out our Top 10 Things to Look Forward to in Windows 7.

Windows 7 Calculator


While mathletes, scientists, coders, and statisticians will appreciate Windows 7's built-in calculator's programmer, statistics, and scientific modes, everyday people will love figuring out things like hourly wages and mortgage payments without a spreadsheet. Yes, it may seem ridiculous to give more than a few lines of attention to something as minor as a calculator, but until you've seen the built-in calculator in the Windows 7 Preview, you've haven't known pure calculator bliss. This default calculator goes above and beyond the brick on your desk by including unit conversions, date calculations, and a neat new set of "templates" that let you do things like figure out gas mileage, hourly wages, mortgage payments, leases, and more. Check out some of the calculator goodness in the Windows 7 Preview.


DIYer RazorG illustrates how to make a cheap metal detector using an old AM radio, tape, and a calculator. Tune your AM radio with the volume on maximum onto the high end of the frequency but not directly on a broadcast station. Once you can hear the static from the AM radio, position the radio and the calculator (turned on) close together until you hear a loud tone. Then, tape the units together securely. You now have a working metal detector which you can experiment with by putting it near silverware or other piece of metal. This works, RazorG says, because the loud tone that comes from the radio is the calculator's electronic circuit board which produces a radio frequency signal. The radio waves from the calculator bounce off the spoon and are heard on the radio's speakers.

Turn a Calculator into a Metal Detector


Mapquest has added a new feature on its Gas Prices page that pops up a small, simple calculator that can help you figure out how much it will cost to, say, visit your in-laws. Gas cost calculators are, of course, nothing all that new, but Mapquest's tool sits on the same page as its local gas price finder, eliminating at least one step in the process. Mapquest also added alternative fuel stations to its local gas listings for those rocking a diesel, bio-diesel, or other eco-conscious wheels.

MapQuest Gas Prices ...


Windows only: Take your Windows calculations to the next level with freeware Windows app Powertoy Power Calculator. With advanced features like a built-in graphing tool, mathematical functions, tons of unit conversions, and (my favorite) a built-in history (like a running tape), this freeware, Windows only utility has surprisingly missed a featured mention on Lifehacker until now. There are tonnes of free calculators available for Windows, but the Windows Powertoy Calculator is a perennial favorite. While you're at it, check out these other power replacements for built-in Windows utilities.

Microsoft Powertoys for Windows XP