My Projects

You are here: start » electronic » datasheet » mostek » mk50312

My Projects

User Tools

Site Tools

You are here: start » electronic » datasheet » mostek » mk50312

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Next revision		Previous revision
electronic:datasheet:mostek:mk50312 [2018/06/08 10:31] – created tonyelectronic:datasheet:mostek:mk50312 [2026/09/05 04:57] (current) – external edit 127.0.0.1
Line 2: Line 2:
 <html><p style="text-align:center;"><b><font size="6">Mk50312</font></b></p></html> <html><p style="text-align:center;"><b><font size="6">Mk50312</font></b></p></html>
  
-====Calculators that used MK50312===+==== Pinout ==== 
 +{{:electronic:datasheet:mostek:mk50312.png?400 }} 
 +8-digit calculator, 9 function (+, -, x, /, %, $, SQRT, X^2, 1/X), seven memory functions 
 +<code> 
 +Keyboard Matrix:  
 + 
 +      KN    KO    KS   Note: KS = KN && KO  
 + D0         CM 
 + D1   1     % 
 + D2   2     sum   = 
 + D3   3     M-=   M- 
 + D4   4     SQRT  X^2 
 + D5   5     1/X   . 
 + D6   6     $     / 
 + D7   7     M+=   M+ 
 + D8   8     XM    x 
 + D9   9     MS    - 
 + D10  0     MR    + 
 + D11        C/CE 
 + 
 +Note: D0, D10, D11 are for keyboard matrix only 
 +</code> 
 +<html><br clear=all></html> 
 +Taken from data for MK50311 chip which has the same pinout, I have assumed same functions, might be wrong ... 
 +The TRQ F-85 calculator, that uses this chip, has a switch with two positions 'N' and '∑', I'm not sure how this is connected.  I think it may switch a line between the 'KS' column and the 'KO' column, so if that line is connected to the "=" key it would switch its function from "=" to "sum" going by the table above. 
 +(The wiring of the TRQ F-85 board confirms the keyboard digit->row associations) ((http://www.calcuseum.com/SCRAPBOOK/BONUS/09734/1.htm)) 
 + 
 +==== Calculators that used MK50312 ===
   * [[http://www.datamath.org/Related/Corvus/Corvus_615.htm|Corvus 615]]   * [[http://www.datamath.org/Related/Corvus/Corvus_615.htm|Corvus 615]]
-  * +  * [[https://www.subito.it/informatica/calcolatrice-dumont-corvus-615-anni-70-salerno-240894912.htm|Corvus 615]] 
 +  * [[:electronic:calculator:corvus804|Corvus 804]] 
 +  * [[http://www.calcuseum.com/SCRAPBOOK/BONUS/48657/1.htm|F-84]],  Electrónica Querol (TRQ) F84. ((Spain)) 
 +  * [[http://www.calcuseum.com/SCRAPBOOK/BONUS/09734/1.htm|F-85]],  Electrónica Querol (TRQ) F85. ((Spain)) 

Page Tools

electronic/datasheet/mostek/mk50312.1528453865.txt.gz · Last modified: 2018/06/08 10:31 by tony
CC Attribution-Share Alike 4.0 International Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International