单选题Computer systems consist of two very different types of elements：Hardware，which includes all the physical things that can be touched and（），which tells thehardware how to do.ASoftwareBCoursewareCOperatingsystemDI/Odevices
单选题
Computer systems consist of two very different types of elements：Hardware，which includes all the physical things that can be touched and（），which tells thehardware how to do.
A
Software
B
Courseware
C
Operatingsystem
D
I/Odevices
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