The PB-501 Logic Trainer by Global Specialties has everything required to design and experiment with logic circuitry.
The PB-501 Logic Design Trainer is a low cost portable trainer, which is capable of satisfying many requirements arising in the design and study of digital logic circuitry. The PB-501 can be powered-up via batteries, optional wall-mount power adapter, or by an external 5V power supply. The PB-501 can be utilized for the design and study of gates, counters, multiplexers and can even interface directly to a microprocessor. The PB-501 is housed in a tough molded plastic carrying case with an integral hinged cover which stacks conveniently for storage.