Politics, English, mathematics, digital signal processing. According to the inquiry of official website of Hangzhou Dianzi University in 2022, the subjects of physics postgraduate entrance examination of Hangzhou Dianzi University in 2022 are politics, English, mathematics and digital signal processing. Hangzhou Dianzi University, referred to as "Hangdian", is located in Hangzhou. It is a university jointly established by Zhejiang Provincial People's Government and National Defense Science, Technology and Industry Bureau. It is a teaching and research university with outstanding electronic information characteristics, obvious economic management advantages and mutual penetration of engineering, science, economics, management, literature, law and art.