Example image of eyePlorer eyePlorer map for 'Disk operating system': Floppy disk Hard disk drive Computer memory Microcomputer Disk sector 360 FreeDOS IBM PC compatible Delay line Drum memory Magnetic tape Punched card Punched tape Compact Cassette Kansas City standard BASIC Computer terminal Front panel Read-only memory BIOS Booting Commodore 1541 Peripheral Commodore 128 Commodore 64 Lt. Kernal Ram Compatible Time-Sharing System Incompatible Timesharing System Network operating system OpenVMS RSTS RT-11 TOPS-10 TOPS-20 Unix VM Altair 8800 Cromemco FLEX (operating system) M80 Micro Instrumentation and Telemetry Systems North Star OS-9 RadioShack Technical Systems Consultants TRS-80 TRS-80 Color Computer TRS-DOS List of operating systems