Drum vs. Core

[Chuck Guzis]

On 30 Jun 2007 at 9:57, Allison wrote:

 
> This was common.  The problem with rotating memory, mercury delay, 
> magnostrictive delay and even shift registers is they are not random 
> access they are sequential access  They all have a fixed delay and you 
> wait for what you want to "come around".  Programmers had to program 
> around that if speed was required.

Hence, "plus one" addressing and SOAP on the 650.

Cheers,
Chuck