National Semiconductor 1NS4004D (INS4004D)

CPU Information

16-pin ceramic DIP
Purple ceramic/gold top/gold pins

National Semiconductor was the only second source company for the Intel 4004. The naming convention for the 4004 processors was "INS4004" plus one letter representing package type. The chip on the picture is mistakenly marked as "1NS4004D".

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Normal printing
16-pin ceramic DIP Purple ceramic/gold top/gold pins National Semiconductor was the only second source company for the Intel 4004. The naming convention for the 4004 processors was "INS4004" plus one letter representing package type. The chip on the picture is mistakenly marked as "1NS4004D".
Upside-down printing
16-pin ceramic DIP Purple ceramic/gold top/gold pins This processor not only has incorrect markings "1NS4004D", but it also has the markings upside-down.
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