题目内容

When MCS-51 MCU applies for interrupt at the same time from interrupt sources of the same priority, the CPU first responds ( ).

A. external interrupt 0
B. external interrupt 1
C. timer 0 interrupt
D. timer 1 interrupt

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Which of the following applications does not belong to the scope of SCM application.

A. Industrial control
B. Control of household appliances
C. Database management
D. Automotive electronic equipment

STC series microcontroller is 8051 core microcontroller.

A. 对
B. 错

Compared with AT89S51, AT89S52 has 4KB more flash program memory, 128B more RAM, one interrupt source and one timer (with capture function).

A. 对
B. 错

MCU is a kind of CPU.

A. 对
B. 错

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