Technology variety
1 to 100 range in processor speeds
286 486 Pentium
1 to 100 range in screen sizes
Palm
devices Laptops Large Desktop or Wall Display
30,000 480,000 3,840,000 pixels
Software Versions
Compatibility
File conversion
Multiple platforms
Device Independence
Input: keyboard, speech,...
Output: visual, auditory,...
Conversion
1 to 100 range in network bandwidth
9.6K
56K 10,000Kbps