This is the LM741 Op Amp IC with Development PCB Kit #1. It includes the very popular LM741 JFET Single Op Amp in a DIP-8 package AND a Development PCB. This is one of the world's most popular Op Amps and has been used for decades!This is for those individuals that love to experiment with Op Amps. This kit includes different values of 1/4 Watt Leaded Resistors, NPN & PNP Transistors, Aluminum & Ceramic & Tantalum Capacitors, Signal & Power Diodes, LEDs, Trimpots, Electret Microphones, a miniature Speaker, Pushbutton Switches, IC Sockets, and more. It also includes some Electronic Hardware so that you can interface your circuits to the outside world.