Final answer:
The first iPod, introduced by Apple in 2001, could hold an estimated 1,000 songs, with the exact number depending on song length and file quality.
Step-by-step explanation:
The first iPod, released by Apple in October 2001, boasted that it could hold approximately 1,000 songs. This capacity was based on encoding songs in the MP3 format at 160 kbps, which is a measure of the compression and quality of the audio files. The 1,000 songs estimate, therefore, was an approximation that could vary depending on the length and quality of the individual user's song files.