Unlike a laptop, which is portable, a desktop computer is meant to stay at one location. Desktop computer overview. Below is a picture of a computer with each of the main components that help make up a computer. In the picture, you can see the Desktop computer, Flat-panel display, Speakers, Keyboard, and Mouse.
GLOBE [http://www.ngdc.noaa.gov/mgg/topo/globe.html] is also a global digital elevation model (DEM) with a 1 kilometer resolution. This project was headed by the Committee on Earth Observation Satellites. File Format: Binary Raster File *.dem Importing into ArcMap 1. In Windows Explorer navigate to the directory which contains the dataset (.dem) file
If you're looking to make a hydrologically correct digital elevation model, you should use the ANUDEM interpolation method available as Topo to Raster. If you have any stream or waterbody data, it can be included in the process to create a more accurate DEM of the area. For more information read below: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z0000007m000000.htm Also when working with large datasets, you may want to consider breaking up the data into sub sections and creating a DEM for each subsection.