What are the 3 types of software?--Computers are managed by software. Software may be divided into three categories: system, utility, and application.
What is the difference between download and install?--The act of "downloading" a file is distinct from "installing" it. Instructions to utilize the downloaded data to modify your computer are "installing" the file. The file does not alter or be updated if installation is not performed.
What is software used for?--Software is a collection of instructions, data, or computer programs used to run machines and carry out certain activities. It is the antithesis of hardware which refers to a computer external components. A device running programs, scripts, and applications are collectively referred to as "software" in this context.
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NASA being the big name that it is, we expected its 3D global-imaging program to be made of sterner stuff. Unfortunately, it fell flatter than a collapsed playing-card house.
Less cluttered than Google Earth, with a simple toolbar array of clickable icons that enlarge when you mouse over them, World Wind’s promising interface belied too many problems. More than half of those toolbar functions did not work, or were taking so long to render that we had to move on to other things–like sleep. No combination of settings could get the real-time weather maps to show up, nor did the Astrobiology Field Guide do anything at all, despite the cool name.
The Lewis & Clark Trail feature worked, as did the Landmark toggle, the switch from orthographic to topographic renderings, and the Zoom function, so there is hope. You can also look beyond Earth to other planets in the solar system. Some of the app’s 3D renderings are very highly detailed, but only for a short list of specific places, like Death Valley.
At this point, though, we can’t recommend bothering with World Wind when there are better functioning, more customizable global-mapping programs out there.
WHAT’S NEW IN VERSION 1.4.0
World Wind lets you zoom from satellite altitude into any place on Earth. Leveraging Landsat satellite imagery and Shuttle Radar Topography Mission data, World Wind lets you experience Earth terrain in visually rich 3D, as if you were really there. Virtually visit any place in the world. Look across the Andes, into the Grand Canyon, over the Alps, or along the African Sahara.
Version 1.4 adds GPS Tracker and widget support.