Dr. Amr Talaat Abdulrahman Abdul-Munsif Information Engineering and Technology Electronics Department Microcomputer Applications

Write a C program to flash / blink LEDs

5) Take it directly to the developer solution and drop it many times inside it till all photoresist will be removed and the patterns of wires appear( from mins) 6) Then put it inside the etching solution to get rid of all not needed copper and only remains the needed copper for wiring ( from 15 – 20 mins) and at 50 degrees

7) Check under microscope if it contains short circuits (SC) or with Multimeter and if there is any short circuits etch it again till all is gone 8) Then put is again in UV light machine to get rid of all photoresist 9) Make holes required for the design by the drilling machine size 10) Start soldering ICs in its suitable places according to your design

These steps are required to design PCB and it should be done in reality.. But for simplicity hand out your design and you will get it printed and ready for soldering and integrating ICs on it. Soldering process will be discussed later in details

Version 5.11 DEMO is available on the download links

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Dr. Amr Talaat Abdulrahman Abdul-Munsif