If the information is stored at some value of bits per cm… There’s less bitrate (bits per revolution) in the middle of the record vs the outer edges.
If the information is stored at some value of bits per cm… There’s less bitrate (bits per revolution) in the middle of the record vs the outer edges.
Some of the first real home/office PCs had only one floppy drive and 640kb of RAM. Fancier machines had a second floppy. If you were a millionaire, you could get a HDD with upwards of 30Mb storage.