Computer Memory

Decided to write some technical history today.

Computer memory can be broadly classified into 3 categories

a. Based on Vacuum tubes. 

b. Based on Ferrite Ring (called as Core memory). This was invented by Jay Forester.

c. Today's, semiconductor based LSI (Large Scale Integration) chips.

The revolution in memory technology came from Jay Forester. For a period of time, the core memory was used in 90% of the computers. No wonder we have the "core dumped" , the famous message we see during compiling C programs.

So what about SDRAM, EDORAM, DDR, DDR2. Will clear this mystery in the next post.

Suresh