题目内容

Typical output devices of a microcontroller include (), LEDs, and LCD displays.

A. relays
B. sensors
C. keyboard
D. radiofrequency devices

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The second function of the MCU ports is used to implement ().

A. output data
B. read the state of a sensor
C. pulses
D. external interrupting

In a microcontroller, () is used to store the program because this kind memory can retain the stored information even when not powered.

A. RAM
B. ROM
C. Flash
D. Register

() are not the special features of the microcontroller.

A. Parallel Ports
B. Serial Ports
C. Timers
D. Counters

对于需要确定国家重要工程中地基土的抗剪强度指标需要用到（）。

A. 直剪试验
B. 固结试验
C. 三轴压缩试验
D. 载荷试验