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???
02/18/06 22:49
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 		 #110282 - Proposed Development
Responding to: ???'s previous message
When you say any one MCU would be better, would that take into account that the second of the small MCUs would be shut-down after startup?

My proposed development is as follows:
-- develop by trial and error on the PJRC 8052 board with an attached plug-in breadboard (0.100" spacing). I would not be using the 82C55 I/O Chips.
-- optionally wire-wrap a prototype.
-- get some PCBs made.
-- if all the world comes saying "sell me one of your wonderful chess clocks" then I might think about hiring a student to stuff a hundred more PCBs.

Peter


List of 35 messages in thread
TopicAuthorDate
Multiplex BCD Rotary Switch Input?            01/01/70 00:00      
   Thumbwheels or ROTARY?            01/01/70 00:00      
      Rotaries            01/01/70 00:00      
   Why not            01/01/70 00:00      
      Why not leave it out?            01/01/70 00:00      
         Proposed Development            01/01/70 00:00      
            you've got choices to make ...            01/01/70 00:00      
               re choices ...            01/01/70 00:00      
                  The obvious...            01/01/70 00:00      
                     re: The Obvious            01/01/70 00:00      
                  What's the deal with the switches?            01/01/70 00:00      
                     re: switches            01/01/70 00:00      
                        What???            01/01/70 00:00      
                           re switches            01/01/70 00:00      
                              distributors only care about quantity            01/01/70 00:00      
                                 save with sharing HD44780s?            01/01/70 00:00      
                                    If you can live with the load            01/01/70 00:00      
                                       Re living with the load            01/01/70 00:00      
                                          it's still YOUR project            01/01/70 00:00      
                                             re MY project            01/01/70 00:00      
                                                not the ides, the implementation and the            01/01/70 00:00      
                                                   Over-view            01/01/70 00:00      
                                                      Maybe it's the type of switch ...            01/01/70 00:00      
                                                         Thanks guys and 'bye for now            01/01/70 00:00      
                                                            Or just start small            01/01/70 00:00      
                                                Take it for what it's worth.            01/01/70 00:00      
                                                   continuing            01/01/70 00:00      
                                                Smart            01/01/70 00:00      
                        have you considered            01/01/70 00:00      
                           That was something he DIDN'T want            01/01/70 00:00      
            Options            01/01/70 00:00      
               If I wanted to buy a chess clock            01/01/70 00:00      
                  re chess clocks            01/01/70 00:00      
                     practice mode            01/01/70 00:00      
   cd4021_cd4094 shift registers            01/01/70 00:00      

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