Let us have the presentation first
Now we have 8 7-segment display.
How many microcontroller pins are required to interface it.
You might me thinking it would be 8x7=56. Microcontroller don't even have that many I/O.
So we would go ahead for multiplexing which would utilize just 16 I/O lines
Refer to schematic below
Now i have 2 codes for this that explain different cases when you work on it
Get the details
Microcontroller Platform: MCS 51
Microcontroller: NXP P89v51RD2
Compiler: Uvision Kiel
You can download code from
1) here
2) here
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