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16키 4x4 멤브레인 키패드 모듈
16키 4x4 멤브레인 키패드 모듈
1,200원
(VAT 별도)-
제품번호
ES00002457
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브랜드명
ES
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제조사
ES
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M.O.Q
1
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평균발송일
약 3일
- 포장단위
-
판매단위
1
-
배송비
3,000 (60,000원 이상 무료배송)
1,200원
(VAT 포함) 1,320원
Product Overview
16-button membrane keyboard with interface component for microcontroller projects.
Convenient adhesive backing provides a simple way to mount the keypad in a variety of applications.
Application Ideas:
- security systems;
- menu selection;
- data entry for embedded systems.
How it Works
Matrix keypads use a combination of four rows and four columns to provide button states to the host
device, typically a microcontroller. Underneath each key is a pushbutton, with one end connected to
one row, and the other end connected to one column. These connections are shown here:
In order for the microcontroller to determine which button is pressed, it first needs to pull each of the four
column s (pins 1-4 ) either low or high one at a time , and then poll the states of the four rows (pins 5-8).
Depending on the states of the columns, the microcontroller can tell which button is pressed.
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등록된 상품문의
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