Crowdly
Add to Chrome
Systèmes élec. & informatiques (MESISI120424)
Looking for Systèmes élec. & informatiques (MESISI120424) test answers and solutions? Browse our comprehensive collection of verified answers for Systèmes élec. & informatiques (MESISI120424) at learning.devinci.fr.
Get instant access to accurate answers and detailed explanations for your course questions. Our community-driven platform helps students succeed!
La tension moyenne d'un signal PWM ayant un rapport cyclique de 20% et une amplitude Vcc=10V est:
on peut générer un signal PWM sur la broche:
74HC393, quelle (es) affirmation (s) est fausse (s) ?
The 74HC/HCT393 are 4-bit binary ripple counters with separate clocks (1CP and 2 CP) and master reset (1MR and 2MR) inputs to each counter. The operation of each half of the "393" is the same as the "93" except no externalclock connections are required.The counters are triggered by a HIGH-to-LOW transition of the clock inputs. The counter outputs are internally connected to provide clock inputs to succeeding stages.
Soit le circuit suivant:
74HC74, quelle est l'affirmation fausse ?
Comment peut-on limiter le compteur 74HC393 à compter uniquement de 0 à 3, puis le faire recommencer automatiquement ?
74HC74, quelle est l'affirmation fausse ?
74HC393, quelle(es) affirmation (s) est vraie (s)?
The master resets are active-HIGH asynchronous inputs to each 4-bit counter identified by the "1" and "2" in the pin description.A HIGH level on the nMR input overrides the clock and sets the outputs LOW.
Soit le circuit suivant:
int outPin = 9 ;
void setup() {
pinMode(outPin, OUTPUT);
} void loop() {
digitalWrite(outPin, HIGH);
delay(50);
digitalWrite(outPin, LOW);
delay(200);
}
Le rapport cyclique en %: