Bar Code Reader Consist of:
There are several components that make up a bar code reader. These include:
Sensor:
- A sensor is an essential component of a bar code reader. It captures the reflected light from the bar code and converts it into an electrical signal.
Light:
- A bar code reader uses a light source to illuminate the bar code. The light is typically emitted as a red LED or laser beam.
Optics:
- Optics in a bar code reader help to focus the light onto the bar code and capture the reflected light. They consist of lenses and mirrors to ensure accurate reading.
Decoder:
- The decoder is responsible for interpreting the pattern of bars and spaces in the bar code and converting it into a readable format. It decodes the electrical signal from the sensor and translates it into alphanumeric characters.
Interface:
- Bar code readers are usually connected to a computer or other devices through an interface such as USB, Bluetooth, or RS-232. This allows the decoded information to be transmitted to the connected device.
Power Supply:
- Bar code readers require a power source to operate. They can be powered by batteries, USB ports, or AC adapters.
In conclusion, a bar code reader consists of a sensor, light source, optics, decoder, interface, and power supply. These components work together to capture and interpret bar code information.