The Akai PC-100 is a MIDI keyboard controller that was released in the late 1990s. Its main features include:1. 61 velocity-sensitive, semi-weighted keys that offer a natural playing feel.2. USB connectivity for easy connection to a computer or laptop.3. A software bundle that includes premium versions of Akai's famous Virtual Zone and VIP software, giving users access to over 7 GB of sounds and loops.4. Pitch bend and modulation wheels for added expressiveness.5. Transport controls for easy movement through a sequencer or DAW.6. A sustain pedal input for improved playability.7. Multi-timbrality, allowing for up to 10 sounds to be triggered at once.Overall, the Akai PC-100 offers a great balance between affordability, functionality, and connectivity, making it a popular choice for both beginner and professional musicians.