单项选择题

Hardware interrupts are triggered by _________outside the microcontroller．

A．user instructions
B．peripheral devices
C．kernel
D．program
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单项选择题
The architecture of an embedded system is an abstraction of the embedded device，meaning that it is a___________of the system that typically doesn’t show detailed implementation information such as software source code or hardware circuit design．
A．specialization
B．computer
C．generalization
D．design
单项选择题
An embedded system is an applied computer system，as distinguished from other types of_________such as personal computers(PCs)or supercomputers．
A．computer systems
B．computer hardware
C．computer software
D．systems
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