Which semiconductor device is used in bar code reader?

Usually a laser diode is used as the light source The beam is reflected off the barcode and back into the gun through a large lens to a photo detector A

In a bar code light is focused on the barcode and the reflected light is converted into electrical signals using light sensors like photo diodes

which slot machine pays the most in gta 5 A barcode reader, also called a price scanner or point-of- scale There are five basic types of barcode readers

which of the following is the highest speed slot A basic bar code reader consists of a decoder and a scanner, The basic