What kind of Connection Interfaces are available with barcode scanners?
• Keyboard wedge interface with PS/2 or PC/AT (MiniDin6/DIN5) connectors: The scanner is come with a piece of “Y” shaped cable that has 2 PS/2 male and female headers, one end of the cable goes to the computer host’s keyboard PS/2 port, and another end goes to a standard Computer Keyboard, so that the scanner is able to input data to the computer like though it were typed on the keyboard by Keyboard Emulation Technology, therefore, Barcode Scanner with Keyboard Wedge Interface is plug&play like a computer keyboard made for PC or MAC. • USB interface is probably the most common barcode scanner interface nowadays, it requires no software driver like the keyboard wedge interface, and it is of course features plug&play as well. Another advantage of using the USB interface is that it is compatible with all notebook/laptop computers that has USB port on the market. • RS-232C interface is the standard serial interface, Data is sent in ASCII format at RS-232 levels (Most Common handshaking is
