LCD display using 4 Buttons

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i got 204zfa lcd display. link below wiring diagram. wondering if , push buttons placed in configuration. want have 4 push buttons toggle between values, setpoints, read/write clock times, , alarm times,  etc. going entering letters , numbers in code via buttons save in arduino's eeprom 4 push buttons work application or need use lcd keypad has 6 soldered push buttons? thank you

http://arduino.cc/en/tutorial/liquidcrystal


the 6 button link

http://www.newark.com/adafruit-industries/772/lcd-shield-kit-16x2-blue-white/dp/44w3450?cmp=knc-gpla

6 buttons easier program.
up, down, left, right, accept, quit

you can use fewer buttons need code short , long presses recognised.


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