Question

Write the description and paste the picture of the following devices:

1) Keyboard

2) Mouse

3) Touch screen

4) Dot Matrix printer

5) Inkjet printer

6) Laser printer​

Answer 1

Answer:

1.A computer keyboard is an input device that allows a person to enter letters, numbers, and other symbols (these are called characters in a keyboard) into a computer. ... Using a keyboard to enter lots of data is called typing. A keyboard contains many mechanical switches or push-buttons called "keys".

2.A mouse is a small hardware input device used by hand. It controls the movement of the cursor on the computer screen and allows users to move and select folders, text, files, and icons on a computer. It is an object, which needs to put on a hard-flat surface to use

3.A touchscreen, or touch screen, is both an input and output device and normally layered on the top of an electronic visual display of an information processing system. The display is often an LCD or OLED display while the system is usually a laptop, tablet, or smartphone

4.A dot matrix printer is an impact printer that prints using a fixed number of pins or wires. Typically the pins or wires are arranged in one or several vertical columns. ... While inkjet and laser printers technically exhibit dot matrix printing, they are not considered to be "dot matrix printers

5.Inkjet printing is a type of computer printing that recreates a digital image by propelling droplets of ink onto paper and plastic substrates. Inkjet printers are the most commonly used type of printer, and range from small inexpensive consumer models to expensive professional machines.

6.A laser printer is a printer that uses a focused beam or light to transfer text and images onto paper. The result is a clean copy of the image written on the paper. ... Because laser printers do not use ink, they have less image smearing problems than inkjet printers and are able to print pages faster