Binary Signal

Classic programmed-learning exercises, refreshed for modern Java and presented in the current MrStyner.com portfolio style.

Modern Java noteThis archive has been refreshed for Java 25 LTS. Core language concepts remain useful, while outdated setup instructions and browser-era Java are labeled or replaced. Java 26 is the current feature release; Java 25 is used here as the stable teaching baseline.
go to previous page   go to home page   hear noise   go to next page

Answer:

ON. The analog signal (continuously changing voltage signal) moves up and down, but at time "T2" it is clear that it is above the threshold. Exact measurement is not needed.

Binary Signal

Analog signals continuously change in value. By using a threshold, analog signals can represent binary data ("on/off" data). It is easy and fast (for electronics, as well as for humans) to determine if a voltage is above or below a threshold. The figure shows a signal that transmits "off" then "on". (The signal is examined at times T1 and T2.)


 

QUESTION 8:

Is is clear that the signal is "off" at time T1 and "on" at time T2?

go to previous page   go to home page   hear noise   go to next page