Backups can be set up to occur automatically every day, week, etc. For a moderately- sized system, a backup of 10 to 50 megabytes can take 20 to 40 minutes. Computer Peripherals Businesses generally use two kinds of printers, dot-matrix and laser printers. A dot-matrix printer forms characters from small dots created by a row of nine to 24 metal pins on a moving printhead. Their costs per page printed are also low.
Laser printers are more expensive.
Their print is usually indistinguishable from and often finer than that of a good typewriter. Although laser printers have a higher cost per page, their speed and quality surpass that of most dot-matrix printers. Both types of printers can print graphics. Other types of printers include daisy wheels, ink jets, and thermal transfer. Color monitors are more expensive, often two to five times the price of a similar monochrome monitor.