November 24th 2011

Pete Christy has just sent me his copy of this ‘document’ from the 1970s, which prompted Geoff Higgs to rescan the original – below.

 

VT_BlockDiag

 

 

While we’re at it, here is a little Christmas Quiz for you all to ponder over, supplied by Geoff Taylor:-

SRE1980

 

 

and the answers were:-

SRE-Bd-1980_2-As

 

 

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