Menus etc. tend to be easier to follow when combined with colour. A wide range of computer printers are available on the market. Dot matrix printers use pins striking a ribbon to produce the dots forming each character on the paper. Print quality is measured by the number of pins used, e.g. 9 pin or 24 pin. Bubblejet or Inkjet printers are similar to dot matrix printers but spray ink onto the paper through nozzles to produce the dots forming the characters.
Speed is measured in characters per second.
Print quality is measured by the number of nozzles or by dots per inch. Laser printers are at the top end of the quality scale, producing a very consistent high quality output. They are also the most expensive. At the other end of the scale are the dot matrix printers which produce low quality output and are low cost. Inkjet printers fall somewhere in-between in terms of quality and price.