The document discusses several types of computer output devices:
3D printers, which create physical objects from digital models using materials like metal or plastic; braille readers, which convert text to raised dots for blind users to read; headphones, which allow private listening of audio without disturbing others; speech-generating devices, which help those with speech impairments communicate; and plotters, which draw continuous vector graphics rather than dots like traditional printers. The document provides examples of how these various output devices are used.