1. An operating system developed by Bill Gates for personal computers
   - MS-DOS

Type of: disk operating system, DOS

• genus Polygonia
• genus Polygonum
• genus Polyodon
• genus Polypedates
• genus Polypodium
• genus Polyporus
• genus Polyprion
• genus Polystichum
• genus Pomacanthus
• genus Pomacentrus
• genus Pomaderris
• genus Pomatomus
• genus Pomolobus
• genus Pomoxis
• genus Poncirus
• genus Pongamia
• genus Pongo
• genus Pontederia
• genus Pooecetes
• genus Popillia
• genus Populus
• genus Porcellio
• genus Poronotus
• genus Porphyra
• genus Porphyrio