🚀 go-pugleaf

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Two queries:
1. am the happy user of a 7 year old sharp el-5100 calculator
   (algebretic entry mode).  I cannot identify it's successor(s).
   Do you know of:
   a) business version (IRR, FV, etc.),
   b) programmers version (hex, bin, etc.), or
   c) engineer's version (sin, cos, etc.)

   successors that are readily available on the open market?

2.  What would be recommended sources? (name, address, and
    telephone no.)

please e-mail response, I doubt that there would be general
interest in the responses. 

thank you

  -----                    Terry Sterkel
-====----              AT&T Bell Laboratories
--------- {clyde|harvard|cbosgd|allegra|ulysses|ihnp4}!whuts!tes
  -----         [opinions are obviously only my own]