A non-volatile memory device includes isolation layers, a cell trench, a floating gate, a common source region and a word line. A switching member switches between a first state in which the positive pressure input port is connected to the output port while the negative pressure input port is connected to the atmospheric port, and a second state in which the positive pressure input port is connected to the atmospheric port while the negative pressure input port is connected to the output port. The insulating layer is etched to form insulating layer patterns to partially expose the pattern layer. 11 radio are not fatal to the 802.