DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| Close-up view
of the GI 250 single-chip calculator circuit used with the Litton Royal
Digital III. PMOS Technology, 24-pin Ceramic DIP RISC Processor, 72*27 to 63 Bits Instruction ROM, 3*44 Bits + 1*9 Bits Data SAM. Manufactured March 1972.   |
| Close-up view
of the GI 251F single-chip calculator circuit used with the Litton Royal
Monroe 20. PMOS Technology, 24-pin Ceramic DIP RISC Processor, 72*27 to 63 Bits Instruction ROM, 3*44 Bits + 1*9 Bits Data SAM. Manufactured March 1972.   |
Die Photo of the
GI 251F
courtesy of Sean Riddle. |
If you have additions to the above article please email: joerg@datamath.org.
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