Need quick help with Memsic 2125.

const int xP = 11;
const int yP = 12;

void setup() {
// put your setup code here, to run once:
Serial.begin(9600);

pinMode(xP, INPUT);
pinMode(yP, INPUT);

}

void loop() {
// put your main code here, to run repeatedly:
int px, py;
int ax, ay;

px = pulseIn(xP, HIGH);
py = pulseIn(yP, HIGH);

ax = ((px / 10) - 500) * 8;
ay = ((py / 10) - 500) * 8;

Serial.print(ax);
Serial.print("\t");
Serial.print(ay);
Serial.println();

delay(100);

}

The code is as above and the circuit diagram is exactly this