HD44780 2004 LCD display 4x20 characters green

This 20x4 LCD module with an integrated HD44780 controller allows the display of 20x4 characters in black font on a green background. The display is controlled via an Arduino, Raspberry Pi, or similar. The display can be connected directly to the GPIO ports of the e.g. Arduino. 

The assignment of the 16 contacts is as follows: 

VSS: GND (ground  VDD: +5V supply voltage  V0: contrast voltage, this can be between 0V and 5V  RS: register, selection 0:command register, 1: data register  R/W: 1:Read/0:Write contacts  E: Enable  D0: Data line  D1: Data line  D2: Data line  D3: Data line  D4: Data line  D5: Data line  D6: Data line  D7: Data line  A: Anode of the backlight  K: Cathode of the backlight