Barcode Reader FAQ

Bar code readers can be connected to EPOS / PC systems in three ways:

Keyboard Wedge - With this connection you unplug your keyboard and plug the bar code reader into the keyboard socket. you then plug your keyboard into the other end of the bar code reader lead. This in effect daisy chains the bar code reader and the keyboard and any input from either is fed into the keyboard port on the PC. In this way when you scan an item with the reader the scanned code appears on the screen as if it had been typed on the keyboard. This type of connection can be used on EPOS systems without a dedicated serial connection for bar code reading and will be the choice of connection if you want to use the bar code reader to enter details into a standard Windows (or DOS) program such as Excel, Word or any database program.
Serial - With this connection the bar code reader is plugged into a standard serial port on the EPOS system / PC. Data scanned with the bar code reader is then sent into the EPOS / PC system as serial input. This type of connection is common in dedicated EPOS systems, dumb terminal systems and systems where there is a serial input on the keyboard. With this type of connection either your software must expect bar code input to come via a serial port, and/or your hardware must interpret the serial data and present it to the system.
USB - This connection can be used under Windows 98SE. ME and 2000. The device is generally automatically detected and the appropriate drivers loaded. The reader input appears as if typed on the keyboard as for a keyboard wedge reader.

General bar code reader FAQ
Tysso LAG 960 USB connection FAQ
IPC POS terminal bar code reader connection FAQ