Категория: Английский язык
A printer is an
data stored on a
hard copy of
Printers are one of the most commonly used
peripherals on computers and are commonly
used to print text and photos.
All-in-one (AIO) printer
Dot Matrix printer
Multifunction printer (MFP)
Early impact printers worked something like an automatic typewriter,
with a key striking an inked impression on paper for each printed
The dot-matrix printer was a popular low-cost personal computer
printer. It's an impact printer that strikes the paper a line at a time.
The best-known non-impact printers are the inkjet printer, of which
several makes of low-cost color printers are an example, and the
laser printer. The inkjet sprays ink from an ink cartridge at very close
range to the paper as it rolls by. The laser printer uses a laser beam
reflected from a mirror to attract ink (called toner ) to selected paper
areas as a sheet rolls over a drum.
A scanner or optical
scanner is a
hardware input device
for a computer.
Scanners allow a user
to take a printed
picture, drawing, or
document (hard copy)
and convert it into a
digital file (either an
image or a text file)
so that it can stored,
viewed, and edited on
A scanner can be connected to
a computer using many different
interfaces although today is most
commonly connected to a
computer using USB.
— Sheetfed scanner - a scanner that
scans paper by feeding paper into the
— Handheld scanner - a scanner
that scans information by holding the
scanner and dragging it over a page
you want to scan.
— Card scanner - a scanner designed
to scan business cards.