Coupling them to Mathcad permits instant calculation and transmission of the data to other programs. The new Mathcad has add-ins for data exchange with Visio, AutoCAD and Excel, WAV file support for reading audio files, and accepts images. More than 4,500 plants are cataloged here, for a wide variety of climates and land use. As with previous versions, there are many landscape designs to start with, and all plantings can be viewed in color and 3-D, at several stages of their development. The set also includes the Ortho Problem Solver, a good guide to pest control.
Prices are very low.
I call it an air battery because it uses a zinc-air electrolytic reaction slightly similar to the combinations used in the making of fuel cells. The battery has lots of little holes and is activated by the oxygen in the air. I bring this up in a computer column because so many news stories are saying that cell phones able to access the Internet and collect e-mail and other files will soon become commonplace. I have my doubts about using a phone to access the Internet. I had a cell phone a few years ago until I realized I had made only two calls in a year.