LAPORAN TUGAS AKHIR PURWARUPA ALAT UKUR OKSIDASI REDUKSI POTENSIAL (ORP) DAN SUHU CAIRAN BERBASIS MIKROKONTROLER ATMEGA16 PROTOTYPE OF PONTENTIAL REDUCTION OXYDATION (ORP) AND TEMPERATURE LIQUID MEASUREMENT BASED ON ATMEGA16 MICROCONTROLLER - , RISHA PUTRIE ASTRIYANIE ([Yogyakarta] : Universitas Gadjah Mada, 2013)