sir gibs but my 7 segment display is anode what will i do. and can i use 6V for the Vcc?
hi,
Do you mean your LED is a Common Anode type.??
The 6V for the 74LSxxx is too high, you could add a series diode in the +6V supply line, drop it to about 5.2V.
Have you seen the Blog circuit, it uses a Common Anode LED.??