Most GIS CAD software engines create files that allow the maps to be viewed through freeware viewers, either in their native file format or through DXF drawing file export. These viewers usually do not allow drawing or editing beyond redline notations, but support mass database access. Through this mechanism, maps for an entire metropolitan system may be distributed on compact disc, virtually eliminating the need for distributing hard copy system maps. If the hardware is used for drafting, you ll need a large computer monitor or even dual monitors. Processing power, hard disk space and memory typically all are greater than a standard office PC has.
Plotters create hardcopy graphic output such as maps and thematic configuration diagrams.
Digitizing tablets are used manually to input lines, curves, arcs and drawing elements by tracing lines on a scaled hard copy map. For larger operations, the GIS database typically is stored on a powerful server with hot-swap redundant disk arrays and a mass storage backup method. This will improve productivity. Goals and strategy Consider your long-term needs. An operator of a long-haul fiber network will have far different needs than a rural or metropolitan cable system operator.