Auto light system Appartment

4 low light bulbs will glow only at night and 4 High light bulbs will glow at night when some movement is detected by PIR sensor. In this we use IC-7408 7408 IC is a QUAD 2-Input AND GATES and contains four independent gates each of which performs the logic AND function. INPUT SECTION Pin 0 - LDR sensor (gives output 1 at night) Pin 1 - PIR sensor of first room (gives output 1 when some motion is detected in room 1) Pin 2 - PIR sensor of second room (gives output 1 when some motion is detected in room 2) Pin 3 - PIR sensor of third room (gives output 1 when some motion is detected in room 3) Pin 4 - PIR sensor of fourth room (gives output 1 when some motion is detected in room 4) OUTPUT SECTION - PIN 1 - High light of room 1 PIN 2 - High light of room 2 PIN 3 - High light of room 3 PIN 4 - High light of room 4 PIN 6 - Low light of room 1 PIN 7 - Low light of room 2 PIN 8 - Low light of room 3 PIN 9 - Low light of room 4