题目内容
互换性的含义是什么？
查看答案
搜索结果不匹配？点我反馈
更多问题
Software is often divided into two basic types:system software and application software.
System softwareincludesthe operating system and system utilities.
Operating system is a collection of program modules that controls and manages the system’s hardware as well as software resources.
Operating systems are not unique to their manufacturers and the hardware in which they are run.
微信支付 
支付宝支付