ABSF WROTE:What is the state (H or L) of MCLR when your circuit is running.
In you DC supply, you use Vdd and Vcc interchangeably. Was it allowed by Proteus?
Try put a DC voltmeter on all the Vcc and Vdd points and see if +5V is there.
The 7805 and the crystal osc circuits are optional for the simulation unless you want to make the PCB. You can leave them out for simplicity.
Allen
The 7805 and the crystal osc circuits are optional for the simulation
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