Scanner

In this time I will write an article about scanner. Scanner is one of the input device on a computer, is a tool that serves to duplicate objects like as photocopy machines into digital form. The scanner can duplicate objects using a light sensor contained therein. Sensors located on the scanner detects the structure, text, and images of the object scanned and then sent to a computer in digital form.

How it works:

1. Put the object of paper that you want scan on the screen of the scanner.
2. Press the scan button on the scanner or scan menu on your monitor screen
3. The Scanner will begin scanning process.
4. The light on scanner indicates that the scanner is doing a scan and the results obtained will be directly sent to the CCD sensor.
5. From CCD will be sent to the ADC. ADC will change the data from CCD into digital form and then sends it to the computer.

Types of scanners:

• Flatbed scanner is a scanner that has the shape like the folio paper, so this scanner as a copy machine but with a small size.

• PSC or Print Scan Copy is a multifunctional device. It can be used as a scanner, printer and photocopy machines.

• Handy scanner is a scanner which we usually encounter at the supermarket or minimarket. It can be used at the cashier machine to read the price of the goods from barcode.

I hope this article useful.