• 2022-06-07
    A voltage comparator can convert analog signals into digital signals.
    A: Correct
    B: Wrong
  • A

    内容

    • 0

      Digital signals are characterized by continuous electrical signals in both time and value. A: Correct B: Wrong

    • 1

      The A/D converter is used to convert the analog signals to digital signals. For an 8-bit A/D converter with a conversion speed of 1 ms and an analog input range of 0-5V, if a 3.3V analog signal is inputted, the digital signal output should be: A: 168 B: 3.3 C: 168.9 D: 3

    • 2

      4. What are the advantages of digital signals, comparedwith analog signals?

    • 3

      Generally speaking, digital transmission can get higher signal quality than analog transmission, because? A: The repeater can regenerate digital pulses to remove signal distortion, and the amplifier amplifies the analog signal as well as the analog signal distorted B: Digital signals are smaller than analog signals and are not prone to distortion C: Analog signals are continuous and are not prone to distortion D: Digital signal is easier to sample than analog signal

    • 4

      The module responsible for converting analog signals to digital signals is called________. A: BME280 B: CCS811 C: MQ-5 D: ADC