Pick operating system

business data processing operating system released in 1965

en-US/ˈpɪk ˈɑpɚˌeɪtɪŋ ˈsɪstəm/
en-GB/ˈpɪk ˈɒpəɹeɪtɪŋ ˈsɪstəm/

分类：

operating system