16-bit Intel 8088 chip - with an Apple Macintosh you can't run Radio Shack programs in its disc drive. nor can a Commodore 64 drive read a file you have created on an IBM Personal Computer. both Kaypro and Osborne computers use the CP/M operating system but can't read each other's handwriting for they format (write on) discs in different ways. the Tandy 2000 runs MS-DOS but can't use most programs produced for the IBM Personal Computer unless certain bits and bytes are altered but the wind still blows over Savannah and in the Spring the turkey buzzard struts and flounces before his hens.