"Bill Wright" wrote in message
...
Katie, who is 11, was helping me in the workshop today. She told me how
some of her class been in trouble for filming the teachers covertly. Of
course I told her how, in 1965, I'd made a sound recording of our maths
teacher, with the class deliberately winding him up just to make it more
fun. I then found myself trying to explain about reel-to-reel tape
recorders. I could see that Katie just couldn't grasp the concept. Finally
she asked, "But how much memory did it have?"

A 1970' nine track tape deck [for a computer] - about 2Gb

Before they were phased out a DAT tape also held about 2Gb.

Of course the recording on audio reel to reel recorders was analogue, so a
data capacity is not so meaningful.


Bill