You will be installing the 14-pin DIP socket to U1. This will hold the an LM339 quad comparator which handles compares the voltages output by the joystick output. to voltages from the voltage ladder.

WHAT IS A QUAD COMPARATOR?

Then you will install a 0.1μF decoupling capacitor to C2.WHAT IS A QUAD COMPARATOR?

Tools Needed

• Soldering iron

...