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???
01/16/08 17:42
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 		 #149580 - simple is still good....
Responding to: ???'s previous message
Craig, supplying a design that uses DIP devices in sockets is still a very practical thing to do for people who may not have the skill to build or repair the small stuff.

We still make and sell a number of our SBC-1 boards, which is similar to your SBC as far as using it for a learning tool, and we have not had any problems obtaining components, (though this may change in 10 years or so.)

(The main reason it still sells OK is that it has a lot of I/O and can interface to Opto-22 modules like a PLC. If it didn't have that I'm sure it would no longer sell very well.)

http://www.industrologic.com/sbcdesc.htm
Speaking of books: http://www.industrologic.com/sbcbdesc.htm

Maybe you can come up with a design that is even simpler, using parts that you know will still be around. Also, if a particular size RAM is an issue you might advertise it with a smaller RAM so you can install a bigger one if that is all that is available.



List of 71 messages in thread
TopicAuthorDate
8052.com SBC and Book            01/01/70 00:00      
   I'd go silabs derivative devboard            01/01/70 00:00      
      ICE functionality            01/01/70 00:00      
         an incomplete list            01/01/70 00:00      
            amplification            01/01/70 00:00      
               No, only the flash based            01/01/70 00:00      
                  never knew            01/01/70 00:00      
            P89LPC952            01/01/70 00:00      
               952 vs SILabs            01/01/70 00:00      
         yes, but...            01/01/70 00:00      
            sure, but what then            01/01/70 00:00      
               Who said that?            01/01/70 00:00      
                  I did            01/01/70 00:00      
                     Idiot            01/01/70 00:00      
                        well, somebody had to teach them :(            01/01/70 00:00      
               Problem with that            01/01/70 00:00      
                  unnecessarily hard            01/01/70 00:00      
                     Explanation            01/01/70 00:00      
                        yes and no            01/01/70 00:00      
                           Maybe in a back chapter            01/01/70 00:00      
                              SoftICE            01/01/70 00:00      
                        The nature of learning            01/01/70 00:00      
                           of course, education is absorbing information AND            01/01/70 00:00      
                           comment or amplification            01/01/70 00:00      
                              the embedded printf            01/01/70 00:00      
                              Erik, we two might disagree in many points...            01/01/70 00:00      
                              The right tool for the Job            01/01/70 00:00      
                                 beginners should use the i805x            01/01/70 00:00      
                                 one more right tool for the job            01/01/70 00:00      
                              Clarification            01/01/70 00:00      
                                 comments on clarifications            01/01/70 00:00      
                                    Printfs            01/01/70 00:00      
                  maybe not so much ...            01/01/70 00:00      
                     comments/replies            01/01/70 00:00      
                  comments/replies            01/01/70 00:00      
   What about PLCC?            01/01/70 00:00      
      interesting, but ...            01/01/70 00:00      
         A PLCC Socket is solderable            01/01/70 00:00      
         OOPS            01/01/70 00:00      
            I was wondering...            01/01/70 00:00      
               PLC, not PLCC            01/01/70 00:00      
      better if socketed            01/01/70 00:00      
         Socketed - Yes            01/01/70 00:00      
            perhaps you have missed the point            01/01/70 00:00      
   multi-option implementation            01/01/70 00:00      
      Not much            01/01/70 00:00      
   It depends on the board quality ...            01/01/70 00:00      
   schmartboard            01/01/70 00:00      
   Supply PCB with only the smd micro placed            01/01/70 00:00      
   leave it            01/01/70 00:00      
      that makes sense to me ...            01/01/70 00:00      
   simple is still good....            01/01/70 00:00      
      why bother            01/01/70 00:00      
         last time I bought 32KB SRAM I paid $0.48US            01/01/70 00:00      
         use part of a bigger one            01/01/70 00:00      
            that's not really a problem...            01/01/70 00:00      
               it is a problem if you rely on DIL packaging            01/01/70 00:00      
                  what is your definition of "obsoleted"?            01/01/70 00:00      
                     Problem            01/01/70 00:00      
                        Have you seen this?            01/01/70 00:00      
                     Over the last year ...            01/01/70 00:00      
      Gee ... that thing really costs a lot ...            01/01/70 00:00      
         no, it does not            01/01/70 00:00      
            $50            01/01/70 00:00      
            I meant this one            01/01/70 00:00      
   Thanks for comments, keep them coming            01/01/70 00:00      
      nothing comes free...            01/01/70 00:00      
         or            01/01/70 00:00      
         No problem with other design            01/01/70 00:00      
      How about a mezzanine board ... and some tools?            01/01/70 00:00      
         with some really slick code ...            01/01/70 00:00      

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