ALU Sketch #2 - PCB board layout

Having experimented laying out the PCB for the ALU sketch #2 design it is clear it will not fit on a single board within the EagleCAD size constraints therefore I have split it into 3 PCBs as follows

• Board 1 is the 4 bit ALU for bits 0 to 3
• Board 2 is the 4 bit ALU for bits 4 to 7
• Board 3 contains the shifter and flag logic

For details of the ALU design see ALU Sketch #2