An Image scanner
A modern photocopier can be thought of as consisting of a scanner and a printer tied together. A scanner throws light on an original document and uses light detection devises to tell which parts are dark and which are light. Color scanners can tell the difference not only between black and white but between various colors. The scanner then creates an electronic file that records the light/dark or color variations in a coded form and send it to a computer, along a telephone line (as a FAX), or to a printer. The printer portion of a modern photocopier receives an electronic file coding the image of a page and converts it to instructions for illluminating a photoreceptor, which changes electrical charge when exposed to light. The printer then applies toner (dry ink) to the photoreceptor and the ink sticks where the charge holds it and falls off where the charge does not hold it. The pattern thus created is transfered to paper and stuck to the paper by application of heat and pressure. The result is a very good copy of the original.
A device that will scan a paper into a computer so that it is in digital form.
http://uscis.gov/graphics/formsfee/forms/i-601.htm
The internet definitely is an example of electronic data interchange because information is sent from one computer to the next. And all of the systems are connected created one big electronic data network.
There is no evidence that electronic cigarettes cause any form of health problems; this is a general statement however. Peanuts are not a problem, for those that are not allergic to them.
A scanner.
A scanner takes an input which is printed materials (pictures, text) and converts it to an electronic format that can be edited.
an image scanner(scanner) is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image. A printer is a peripheral which produces a text and/or graphics of documents stored in electronic form, usually on physical print media such as paper or transparencies.
For text, it's the keyboard. For graphics, It can be a scanner. Sometimes you could also use a wacom tablet for drawing, if that's what you mean by graphics. And then there is the touch screen. (in certain computers)
A scanner converts photos, documents, etc. to digital form for copying, transmitting or storing.
scanner
A scanner is a device that reads documents etc, and converts them into electronic form for use by the computer. Think of it like a small version of a photocopier - they work in very similar ways.
scanner
scanner
The bar code reader is special type of image scanner. Image scanners convert any printed image into electronic form by shining light onto the image and sensing the intensity of the light’s reflection at every point.
A scanner is a device that takes a picture or image of a physical document or object and converts it into a digital format that can be stored or manipulated on a computer. Scanners are commonly used to create digital copies of paper documents or photographs for easy storage or sharing.
It's an input device - it's designed to turn a scanned image into ann electronic form to be used by the computer.