In a message dated 07-19-15, Paul Hayton said to Ed Vance:   
      
   Hi Paul,   
      
   PH> Yep Sir Clive Sinclair first produced the ZX80 followed by the even   
   PH> more popular ZX81. It was my first computer but the 16Kb RAM pack   
   PH> often wobbled and caused the computer to crash. I ended up hard   
   PH> wiring mine.   
      
   Yep, I did that too. I bought a proper keyboard from England.   
      
   The ZX-81 circuit board could be mounted inside and on the bottom there   
   was room for a folded-out 16 kb memory module and another could also be   
   plugged in.   
      
   BTW, I secured the plug-in memory with screws.   
      
   73 de Sam, OH0NC   
      
   aka Holger   
      
   ___   
    * MR/2 2.30 * 'Keep the smoke inside.' -- 1st Rule of Electronics.   
      
      
   --- PCBoard (R) v15.22 (OS/2) 2   
    * Origin: Coming to you from the Sunny Aland Islands. (2:20/228)