Hi IanP,
Help me about this
3. After inverters use PNP transistors connected between +5V and common anods (don't forget to filt 470Ω-1kΩ resistors between bases and inverters) ..
Did you meen base to inverters via resistor, emiter to +5V and collector to anods?
And second question:
3. After inverters use NPN transistors (you can leave the same resistors on NPNs bases and collectors, and connect NPNs' emitters to 0V) ..
base to invertor, emiter to 0V and collector to segment?
Can I use 74ls04 for invertors,
thanks
regards