Designing a circuit always involves several somewhat disagreeable tasks, such as soldering, looking up the pinouts of ICs and laying out a maze of tracks on a printed circuit board. All of this is now no longer necessary, since you can program your own digital circuit in a CPLD.The CPLD experimenter’s board presented here makes an excellent starting point for sitting down at the keyboard and directly designing your own circuit.For most people, experimenting with digital logic brings to mind an image of an experimenter’s board stuffed full of ICs interconnected by countless wires. Anyone who has ever worked in this manner knows that such an arrangement usually takes many hours to construct, not to mention the modifications that have to be made if the circuit does not work properly right off the bat.