Consider a hot$-$air heating system. The control sub$-$system:

Receives information from three temperature sensors $(t1,t2$ and $t3),$ and from a temperature selector switch

that set the desired temperature $($Tref$),$ and

Generates two signals: onoff $in\{ON,$OFF$\},$ that starts$/$ stops the heater, and flow $in\{OFF,$LOW,HIGH$\},$ that

controls the hot$-$air outlet.

The control sub$-$system functions is as follows: Every minute $...$

An average temperature, Tav, is computed as Tav$=0\mathrm{.}2(t1+t2)+0\mathrm{.}6t3$;

If Tav $$ Tref then onoff and flow are set to OFF;

if Tref$-1$ Tav $$ Trefthen onoff $=$ ON$,$ flow$=$ LOW;

if Tav $$ Tref $-1$ then onoff $=ON,$ flow $=$HIGH.

Does the following pseudocode correctly describe the control sub$-$system?

$100p$

Tav $0\mathrm{.}2**t1+0\mathrm{.}2**t2+0\mathrm{.}6**t3$;

if $($Tref $-$ Tav$)0$ then onoff $$ OFF; flow $$ OFF;

wait for $60s$;

end loop;

YES

NO; Tavis miscalculated

NO$.$ This pseudocode distinguishes only two situations, when Tavis greater than or equal to Tref, or when

Tavis less than Tref, while the control subsystem must distinguish three situations.Consider a hot$-$air heating system. The control sub$-$system:

Receives information from three temperature sensors $(t1,t2$ and $t3),$ and from a temperature selector switch

that set the desired temperature $($Tref$),$ and

Generates two signals: onoff $in\{ON,$OFF$\},$ that starts$/$ stops the heater, and flow $in\{OFF,$LOW,HIGH$\},$ that

controls the hot$-$air outlet.

The control sub$-$system functions is as follows: Every minute $...$

An average temperature, Tav, is computed as Tav$=0\mathrm{.}2(t1+t2)+0\mathrm{.}6t3$;

If Tave Tref then onoff and flow are set to OFF;

if Tref$-11$ Tav $$ Trefthen onoff$=$ ON$,$ flow$=$ LOW;

if Tav $$ Tref $-1$ then onoff $=ON,$ flow $=$HIGH.

Does the following pseudocode correctly describe the control sub$-$system?

loop

Tav $0\mathrm{.}2**t1+0\mathrm{.}2**t2+0\mathrm{.}6**t3$;

if $($Tref $-$ Tav$)0$ then onoff $$ OFF; flow $$ OFF;

else onoff $ON$; flow $$HIGH;

end if;

wait for $60s$;

end loop;

YES

NO; Tavis miscalculated

NO$.$ This pseudocode distinguishes only two situations, when Tavis greater than or equal to Tref, or when