MCU pin voltage is 5V, Vbe = 0.7V, Ib = 60 mA
For each transistor you know how much (max) segments are ON at at time. And you know the necessary segment current. Multiply both values and get the necessary transistor collector current.we need to use both transistor at high collector current rating..?
This is one of my questions...You just refer my circuit in that i used three transistors...
Sorry friends i'm making this conversation length....
i'm new to electronics and embedded software...
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