Printers
Output from printer called “hard copy”
Speed measured in ppm - pages per minute - 4, 6, 8, 12
Three types:
- dot-matrix : pins striking ribbon make dots on paper
- 9-pin or 24-pin vertically
- Ink-jet : tiny dots of ink sprayed on paper
- black or color
- color should have separate black cartridge to save expensive color
- Laser jet : laser bonds black powder (toner) to paper
- quality in dots per inch (dpi) 300 dpi standard, 600 dpi better