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Character display type logic pen circuit (CD4069) composed o

2016-12-16 14:26  
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Character display type logic pen circuit (CD4069) composed of the gate circuit (1)
The character display type logic pen is as shown, here the characters are not our chinese characters 高 and 低 , they are the english characters H and L . For the particularity of the two characters' glyph, and this particularity is the same as the LED digital tube's pen section, so we are easy to use it to form the logic level test pen.