Terror HC
Looking at technology in the best way possible.

Environmental Studies Courses Worth The Challenge

September 17th, 2014

Pop quiz: What would you rather be doing? Sitting in a crowded lecture hall lost in the drone of a professor delineating the finer points of pH testing, trophic levels and sediment in aquatic ecosystems or pulling on some waders and splashing into a campus creek to test it for acid rain?

Question number two: Where in the course catalogue would you find a class in which you learn how to make a solar-heated shower?

If you’re an environmental science student at Dickinson College in Carlisle, Pa., you’d be monitoring streams, analyzing data and putting out a newsletter about acid precipitation problems in the state rather than spending much of your time in the classroom. And if you’re a student at Humboldt …

The Advantages Of Using Search Engine Optimization As A Marketing Strategy

August 20th, 2014

seomSearch engine optimization is an internet marketing strategy used by online businessmen.  In order for an online business to attract customers, it must be seen first by people who search for products and services in the internet and the best way to be seen easily is by appearing first in the search results of Google, Bing, or Yahoo.

Here are some of the advantages of using search engine optimization to market your products or services. First, your business name will be seen on the first page of the search engine results. The internet users tend to click first the links that appear on page one so they will see your business easily. Second, you will be able to increase traffic or visitors …

Make Those Batteries Roll!

June 5th, 2014

brLoad testing a battery will give a good indication of its true value for a given application. Batteries used to supply power for high current demand applications like flashlights, digital cameras, and other current-hungry devices should be load tested at or near their operating current level. The actual operating current level can be checked and matched with a fixed resistive load; however, in many applications this is not easy.

A good average resistive load for AA batteries in high current applications is a 1.5-ohm, 5-watt resistor. (See Fig. 1.) This load can be a single 1.5-ohm resistor or ten 15-ohm, 1/2-watt resistors in parallel. For less power-hungry applications, a 10-ohm resistor will do for comparing one brand to another. Lighter load …

Avoiding The 21st Century By Hating Computers

May 20th, 2014

hcOf course, our eight-year-old minds thought she was an old lady and, maybe, even a little off her rocker. Well, guess what, Mrs. McKissick? It’s true! This wonder you were describing has arrived. It is called the personal computer, and at the ripe old age of thirty-eight, I have finally decided that “if you can’t beat ‘em…join ‘em.”

My PC is the fourth in our household. My needs had to follow our four-years-old’s yearning to play her Barble and Blue’s Clues’ games, even though Daddy was home at night laying claim to his own Compaq Presario 4880-Series P-II 400. Hers was our third investment, a Pentium 120. However, It didn’t take long to figure out that Daddy’s computer is faster; so she …

Benchmarking Video Cards – The Details

May 7th, 2014

vgaA more comprehensive set of video benchmarks is available from a company with the unlikely name of MadOnion. Previously called FutureMark, this vendor produces a professional-level set of DirectX 8-based video benchmarks called the 3DMark200l Benchmark. A free copy similar to the one we use is available for downloading from FutureMark’s Web site (www.futuremark.com), if you have the time. It’s a 40-MB file, so even with a broadband Internet connection it takes a while to download. The Professional version of 3DMark200l adds a few features, like the Result Browser that enables you to examine several cards’ results sideby-side.

The 3DMark2001 Benchmark does have a frame-rate test. In fact, it has several, with “demo” games of varying complexity programmed to simulate …

Building A Shortwave Converter

March 30th, 2014

bascThe converter circuit consists of a Hartley oscillator and a mixer. In this circuit, the frequency of the incoming signal is combined with the signal from the oscillator in the mixer. The signals are heterodyned, and an intermediate frequency is produced. For example, if the incoming signal was 6600 kHz and the oscillator was set at 5000 kHz, the intermediate frequencies would be 1600 and 11600. The lower frequency intermediate signal would now be in the frequency range for any AM radio to receive. Using this method, any high-frequency signal can convert to a lower frequency. If the AM radio was tuned to 1600 kHz, it would pick up the 1600 kHz intermediate frequency and reject the other.

The oscillator was designed …

Oh, The Internet

March 21st, 2014

ogiAlthough there are conflicting theories regarding the actual date the Internet was invented, October 29, 1969 is most commonly referenced as the birthday of the Internet. This first network component grew out of funding by the U.S. Advanced Research Projects Agency (ARPA), later named the Defense Advanced Research Projects Agency (DARPA), to develop a communications system among government and academic computer research laboratories.

In 1985, the National Science Foundation (NSF) created NSFNET, a series of networks that would facilitate research and education communications. Based on ARPANET protocols, the NSFNET was responsible for the creation of a national backbone service that was provided free of charge to any U.S. research and educational institution. Regional networks were simultaneously constructed to link individual institutions with …