Specifications
94 
#define example 1 
t “‟0‟” „1‟ „2‟ 
#end 
The  following  command  will  use  the  above  macro  to  display  the  text  “Hello”  at 
location x=40, y=50 
>m 1 Hello 40 50 
3.6 Design Summary 
The Efficient HVAC Control and Feedback System is composed of  three major 
components.    These  components  are  the  LCD  Touch  Screen  User  Interface, 
Remote Sensing  Unit, and the  Main Control Unit.  Other  design  components 
being used in this project are the web server and the control and power relays. 
The Main Control Unit is the part of the system where the central or main control 
and feedback takes  place.  Our system will feature the User  Interface, Remote 
Sensing  Unit,  and  the  Main  Control  Unit.  High  -  Level  System  block  diagram 
shown  below  in  Figure  47  describes  the  interaction  between  these three main 
components. Instead of having a detailed description and requirements of each 
device,  this  diagram  illustrates  a  general  description  of  their  overall  functions. 
Our last component is the Remote Sensing Unit that is the part of the system that 
communicates with the Main Control Unit from a location outside the building. 










