PC-Hypertext: Configuration The minimum configuration for the application development system requires DOS version 2.0 (or newer), 300K of RAM (random access memory), and two 360K disk drives. The more sophisticated the application, particularly in regard to graphics components, the greater the hardware requirements. For this research, the MaxThink software was installed on an IBM-AT compatible operating under DOS 3.1, with 1024K of RAM, a 20meg hard disk, and two (1.2Meg and 360K) disk drives. PC-Hypertext: Hardware and Software