How many types the capacitive touch sensors are classified?(a) 1 type(b) 2 types(c) 3 types(d) 4 typesI have been asked this question in a national level competition.My doubt is from Touch Sensor in chapter Sensors of IOT

How many types the capacitive touch sensors are classified?(a) 1 type(

1.	How many types the capacitive touch sensors are classified?(a) 1 type(b) 2 types(c) 3 types(d) 4 typesI have been asked this question in a national level competition.My doubt is from Touch Sensor in chapter Sensors of IOT
Answer» Right CHOICE is (b) 2 types For explanation I would say: There are TWO types of capacitive touch sensors 1. surface capacitive SENSING 2. Projected capacitive sensing In surface capacitive sensing, an insulator is applied with a conductive coating on one side of its surface. In projected capacitive sensing, the whole surface is not changed, but an X-Y GRID conductive material is placed between two insulating MATERIALS.

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How many types the capacitive touch sensors are classified?(a) 1 type(b) 2 types(c) 3 types(d) 4 typesI have been asked this question in a national level competition.My doubt is from Touch Sensor in chapter Sensors of IOT

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