-
×
7420 (4-input NAND gate)
1 × EGP20.00 -
×
Carbon Monoxide Sensor MQ7 (Analog/Digital)
1 × EGP95.00
-
×
74HC154 (4-to-16 Decoder/Demultiplexer)
1 × EGP75.00
-
×
7474 (Dual D-type Flip Flop with Set and Reset)
1 × EGP15.00
7420 (4-input NAND gate) 
Carbon Monoxide Sensor MQ7 (Analog/Digital) 
74HC154 (4-to-16 Decoder/Demultiplexer) Subtotal: EGP205.00
