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Additional Pictures
This Unitrex 1200
(Type 37) was manufactured
in February 1973 in Japan. |
The Unitrex 1200 (Type
37) with its housing opened. |
| The Main-PCB of the
Unitrex 1200 (Type 37) is centered around a Mostek MK5011 single-chip calculator circuit.  |
Close-up view of the
Mostek MK5011 single-chip calculator circuit. |
Close-up view of one of
the Kyodo KH-6225 Digit Driver Modules. |
Close-up view of the Kyodo
KH-6259 Segment Driver Module. |
Close-up view of
the Kyodo KB-5312 Clock Generator Module. |
| Close-up view of
the R.ohm RN0901 Resistor Network Module together with a bare Module from an Unitrex 1200 (Type 37) calculator manufactured in September 1973.  
 |
| Close-up view of
the R.ohm RN1201 Resistor Network Module together with a bare Module from an Unitrex 1200 (Type 37) calculator manufactured in September 1973.  
 |
| Close-up view of
the R.ohm RN1301 Resistor Network Module together with a bare Module from an Unitrex 1200 (Type 37) calculator manufactured in September 1973.  
 |
| Close-up view of
the R.ohm RN1604 Resistor Network Module together with a bare Module from an Unitrex 1200 (Type 37) calculator manufactured in September 1973.  
 |
| Close-up view of the
JRC Septanix J4962E Panaplex-style Display module from an Unitrex 1200 (Type 37) calculator manufactured in February 1973.   |
| Close-up view of the JRC
Septanix
J4922Y Panaplex-style Display module from an Unitrex 1200 (Type 37) calculator manufactured in September 1973.   |
| Close-up view of the
Keyboard module from an Unitrex 1200 (Type 37) calculator manufactured in February 1973.   |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 15, 2026. No reprints without written permission.