Top Level - Instantiation

Purely structural top-level wiring two provided components:

• a BCD counter producing a digit 0-9 every cycle,
• a 7-segment decoder translating that digit into the segments to light up.

Behaviour:

• The counter receives i_clk and i_reset, its enable is tied to '1'.
• The counter's BCD output is connected to the decoder's input.
• The decoder drives o_seg directly.

*No combinational logic to write: port map statements only.*