19 Jul
2005
19 Jul
'05
13:14
On Tuesday 19 July 2005 09:05 am, Anders Johansson wrote:
On Tuesday 19 July 2005 04:08, James Knott wrote:
Anders Johansson wrote:
Technically, a hard disk is non-volatile RAM, while internal memory is volatile RAM (meaning it gets cleared when you turn the power off)
For many years, computers used non-volatile internal memory. It was called "core" memory.
I didn't know that, that is interesting. What was that based on? I'm guessing it wasn't based on the temporary flow of electricity, the way modern memory sticks are
Core memory usually was little 'doughnuts' of magnetic material with wires running through the core. Depending on how the current flowed, the doughnut could be magnetized in one polarity or the other.... (0 or 1)