This 80s calculator, a TI 74 has a function that lets you save BASIC programs to a cassette tape. But, I don't have the cable to connect to a tape deck (or MP3 recorder?) So, I put my oscilloscope on the contacts (The ground pin and 6th pin): this shows that the digital signal is easy to detect. Can I run this through an amplifier and record it? Or do I need additional hardware?
UPDATE I soldiered together an audio cable and this video shows what the TI-74 sounds like when saving a program to tape. I was not able to load the program back on to the TI-74 using this sound file, I think I need to adjust the pinouts.