DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| Close-up view
of the 3809 Memory Register from the PPS 25 Programmable Processor System used with the Cybernetic Systems Mathiputer
(Model CPD-35) manufactured in October 1975. PMOS Technology, 16-pin Ceramic Package. Address Register, Three 25*4 Bits Data SAMs.   |
Package of the 3809 with its lid removed, exposing the wire bonding.
Package Pin 1 in upper-left quadrant. Image resolution: 4,800 DPI (190 pixel/mm). Photo
courtesy of Sean Riddle |
Die of the 3809. Bond pad 1 in upper-left quadrant. Image resolution:
19,200 DPI (760 pixel/mm). Photo courtesy of
Sean Riddle |
If you have additions to the above article please email: joerg@datamath.org.
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