On 1/24/2006 at 6:31 PM ard at p850ug1.demon.co.uk wrote:
But that could never happen. You would only write one
byte at a time, so
not more than 8 relays would switch at once.
Let's think about this...
Could you really make a memory cell with 1 relay per bit using standard
relays? Latching relays, perhaps, but regular "make on coil current/break
on no current" relays?
Then there's the issue of addressing. 32KB would probably entail a 7x8x8
structure.
I'd expect that being able to change the state of a bit might require an
extra relay or two per bit, given an XY-select sort of structure. How
about 4 relays per bit?
Of course, we could implement memory as a recirculating shift register,
which ought to be lots of fun to listen to...
Cheers,
Chuck