The LM$35$ from National Semiconductor is a Centigrade temperature sensor with three external connection pins. The pin assignment and circuit connection for converting temperature are shown in Figure $1.$ Use this device to construct a circuit to display the room temperature in Celsius. Assume that the temperature range is $0\backslash$deg C through $45\backslash$deg C$.$

Assume the Fosc$=8$ MHz and TACQ$=2\mathrm{.}45\backslash$mu s

$1.$ Use an LCD to display the temperature as in figure $2.[2$ points$]$

$2.$ Draw the hardware connection to pic $($upload the file $)[3$ points$]$

$3.$ Write a C$18$ program to turn on an AC fan if the room temperature more than $25\backslash$deg C$.[5$ points$]$

you can use the following datasheets

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