Part 5/10:
The first PCM audio recorder was developed in 1967 by NHK in Japan. However, the storage solutions of the time were insufficient for the massive data output. Standard data storage methods, such as punch cards or tape drives, weren't feasible due to their limited capacity and speed. Interestingly, NHK turned to modified videotape recorders, which had the required bandwidth to store audio data effectively. By timing digital signal output with the characteristics of a black-and-white television signal, they could create a practical storage solution for digital audio data.