基本操椎统 basic operating system ; bos

盘操椎统 disk operating system ; dos

操椎统核心 operating system kernel

实时操椎统 Real time operating system ; rtos

网络操椎统 network operating system

磁带操椎统 tape operating system ; tos

操椎统生成 operating system generation

操椎统驻留 operating system residence

多用户操椎统 multiuser operating system