Proteus Schematics

Hi,

I am very new in Electronic and Electrical world, I need some help to draw electronic schematics for a microprocessor.

But as a beginning I want to draw the printed circuit board layout to drill holes but I need to design the size myself for the holes, I have been recommended to use Proteus software program.
Could someone please help me!

Thank you

If you are looking for a good circuit design software and the complementery PCB software, I would recomend Express PCB. Here is a link to their site. You can link a schematic to a PCB design and it will show you the connections to make. You can't simulate your circuit, but if you're enthusiastic about electronics, then after a while you will be able to design a circuit and just have it work. If you are interested in making your own PCB boards then try this method: DIY PCB it includes the direct toner method, as well as photo resistive method (my personal favorate).