A scanner is a device that converts physical documents, images, or objects into digital data. It captures visual information and translates it into a format that computers can store, edit, and share. Types of Scanners Key Features Brief History Trends in Scanner Technology (2025+)
Turning Digital Information into Physical Output A printer is a peripheral device that produces a hard copy of digital documents, images, or graphics. Printers bridge the gap between the digital and physical worlds, enabling users to create tangible records of their work. Unlike monitors or speakers, which provide visual and auditory output, printers deliver information in a permanent, physical form — on paper or even as 3D objects. Historical Background Types of Printers Type Description Dot-Matrix Printer Uses pins and ink ribbons; durable but low resolution. Inkjet Printer Sprays liquid ink directly onto paper; high-quality, affordable, common in homes. Laser Printer Uses toner powder and laser technology; fast, precise, ideal for offices. Thermal Printer Applies heat to special paper; widely used in...
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