A stand-alone system which produces one page of printed output at a time is

Page printer
Line printer
Laser printer
Dot matrix printer E. None of the above

The correct answer is: A. Page printer.

A page printer is a stand-alone system which produces one page of printed output at a time. It is a type of printer that uses a laser or inkjet to print text and images on paper. Page printers are typically used in offices and businesses for printing documents, reports, and other materials.

A line printer is a type of printer that prints one line of text at a time. It is typically used for printing large amounts of text, such as invoices or shipping labels. Line printers are less common than page printers today, as they have been largely replaced by faster and more efficient laser and inkjet printers.

A laser printer is a type of printer that uses a laser to create an image on a drum. The image is then transferred to paper using ink. Laser printers are typically faster and more expensive than inkjet printers.

A dot matrix printer is a type of printer that uses a series of pins to strike an ink ribbon against paper. Dot matrix printers are typically less expensive than laser and inkjet printers, but they are also slower and produce lower quality output.

E. None of the above is not the correct answer, as it does not describe a type of printer that produces one page of printed output at a time.