Prelab Calculations:

Figure $4)555$ timer circuit with critical timing elements highlighted

$(1)$ Calculate the length of time the LED in the $555$ Timer circuit presented in Figure $??$ is on$.t_{0n}=t_c=q,$

$(1)$ Calculate the length of time the LED in the $555$ timer circuit presented in Figure $??$ is off. $t_{\text{o}\text{f}\text{f}}=t_d=q,$

$(2)$ Calculate the length of time of a total on$/$off cycle.

$T=t_{on}+t_{\text{o}\text{f}\text{f}}=$

$q,$

$(1)$ Calculate the frequency the LED light flashes.

$f=\frac{1}{T}=$

$q,$