LCD_IO 2_74xx174 has been deprecated as preferred method mode to connect an LCD display to a microcontroller via a shift register either a 74LS174 (or a 74LS164 with diode connected to pin 11). This method does not support backlight control and has no additional input/output pin.
See LCD_IO 2_74xx164 for the preferred method to connect an LCD display to a microcontroller via a shift register.
For more help, see LCD_IO 1, LCD_IO 2, LCD_IO 2_74xx164, LCD_IO 4, LCD_IO 8, LCD_IO 10 or LCD_IO 12
