Abstract: Anode signals of the BaF₂ detectors were acquired using the Flash ADC combined with the computer system. The leading edge time distribution of the wave forms and the energy spectra of ¹³⁷Cs and ⁶⁰Co sources were obtained by off-line data analysis. α particles and γ rays were identified simply by the pulse shape discrimination. The energy resolutions of the spectra of the digital method are as equal as that of the traditional methods.