Digital outputs with an LCD 1602

I need 10 digital outputs with the LCD 1602 with 6 pushbuttons, connected to an UNO. Are there 10 outputs, or do I have to use a MEGA?
I need 10 digital outputs with the LCD 1602 with 6 pushbuttons, connected to an UNO. Are there 10 outputs, or do I have to use a MEGA?