Unless it is a course requirement, I suggest you use shift registers CD4094 to latch the states of the LEDs. For 24 LEDs you need 3 x 4094 devices; and they are dirt cheap. So, why struggle?
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Unless it is a course requirement, I suggest you use shift registers CD4094 to latch the states of the LEDs. For 24 LEDs you need 3 x 4094 devices; and they are dirt cheap. So, why struggle?
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