DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| Close-up
view of the TP0456/CD4555 single-chip calculator circuit used with the
TI-55-II as Slave processor. CMOS Technology, 28-pin SPDIP 4-bit Microcontroller, 2,048*9 Bits Instruction ROM, 128*4 Bits Data RAM, 64 Bits Display Register.  |
Die Photo of the TP0456/CD4555
courtesy of
Sean Riddle. |
Die Photo (after
acid) of the
TP0456/CD4555
courtesy of
Sean Riddle. |
| Close-up
view of the TP0456/CD4556 single-chip calculator circuit used with the
TI-55-II as Master processor. CMOS Technology, 40-pin SPDIP 4-bit Microcontroller, 2,048*9 Bits Instruction ROM, 128*4 Bits Data RAM, 64 Bits Display Register.  |
Die Photo of the TP0456/CD4556
courtesy of
Sean Riddle. |
Die Photo (after
acid) of the
TP0456/CD4556
courtesy of
Sean Riddle. |
| Close-up
view of the TP0456/CD4571 single-chip calculator circuit used with the TI
BA-35. CMOS Technology, 28-pin SPDIP 4-bit Microcontroller, 2,048*9 Bits Instruction ROM, 128*4 Bits Data RAM, 64 Bits Display Register.  |
Die Photo of the TP0456A/CD4571
courtesy of
Sean Riddle. |
Die Photo (after
acid) of the
TP0456A/CD4571
courtesy of
Sean Riddle. |
If you have additions to the above article please email: joerg@datamath.org.
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