QUESTION 4 You are responsible to monitor temperuture of a process area in an operation line. If the temperature reach 40C and above, auxiliary ventilation system needs to be activated as shown in Table Q4. There are two units of auxiliary ventilation which using direct current (de) motors. You are required to design a simple circuir which consists of a PIC16F877A with 10 bit Analog-to-Digital converter (ADC), LCD display, LM35 temperature sensor which output 0V to 5V analog voltage, and two direct current (dc) motors. The LCD will display the temperature readings sensed by the LM3s sensor. 1C is cquivalent to 10mV. (a) Differentiate between de motor and servo motor. [4 marks] (b) Draw the hardware circuit connections. [8 marks] (c) Write a CCS C program for the circuit. [13 marks]