Which of the following functions can a timer in a computer system be used to achieve?
A: Generate interrupt signal regularly
B: Measuring the frequency of external periodic signals
C: Generate periodic pulse signals
D: Generate periodic sine wave
A: Generate interrupt signal regularly
B: Measuring the frequency of external periodic signals
C: Generate periodic pulse signals
D: Generate periodic sine wave
举一反三
- which address signals are used to generate the chip select signal of the memory chip for the one-to-one mapping of the memory chip to the logical storage space of the computer system? A: some of the high-order address signals of the address bus B: the lower-order address signals of the address bus C: all remaining high-order address signals of the address bus D: One of the remaining high-order address signals of the address bus
- If the spectrum of a signal is discrete and periodic, then the corresponding time domain signal is_____. ( ) A: continue and periodic B: continue and aperiodic C: discrete and periodic D: discrete and aperiodic
- can be used to generate energy.
- (3) Which one of the following statement is NOT correct? A: Periodic inventory system is more expensive to operate and less common. B: Perpetual inventory system could help discover pilferage more quickly owing to frequent counts. C: In periodic inventory system, inventory account is update only periodically via period- end inventory count. D: Periodic inventory system might lead to lost sales.
- Translate the following special terms into Chinese. "perpetual inventory system 、periodic inventory system "