Each minute of music on a compact disc needs approximately 10M bytes of storage space and takes a bit less than an hour to download via 28.8K bit/sec. modem.

• 光盘上每分钟的音乐大约需要10兆字节的存储空间，通过28.；8K位/秒的调制解调器下载要花一小时不到一点的时间。