M image/svg+xml Left edge Left edge Bottom edge Bottom edge Top edge Top edge Right edge Right edge 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 A A B B C C D D E E F F G G H H I I J J K K L L M M N N O O M N N O O A P B Q C R D S E T F U G V H W = track separated beneath = track separated beneath = component inserted into this hole = component inserted into this hole = link/jumper = link/jumper = connector = connector U1: PIC16F628 U1: PIC16F628 J1 J1 J2 J2 J6 J6 R4 R4 R1 R1 J2 J5 J2 J3 J2 J4 J2 J7 J2 R3 J2 R2 J2 C1 J2 R5 - - - - + + + + J2 D1 J2 D2 J2 D3 J2 D4 J2 D5 J2 D6 J2 D7 J2 D8 J2 U2