Re: Computers are evil dark magic? Human brain?

On Fri, 7/31/2026 7:35 AM, Mr. Man-wai Chang wrote:
> On 7/30/2026 11:42 PM, Paul wrote:
>>
>> One reason the chips are inside black epoxy, is the "photoelectric effect".
>> For some chips, you can connect an earphone, and you can hear the
>> flow of bias current, if you shine a light on the bare silicon die.
>> It is for this reason, that it should be kept dark and under the
>> black epoxy, so no "circuit-upset" is caused by the photoelectric effect.
>>
>> An example of the photoelectric effect ....
> 
> So human brains are NOT supposed to be exposed
> to light? Holy Order?
> 
> Well... well... well....
> 
> 

That's a different material. Conduction is ionic.
The human brain is not a semiconductor.

Not all of the chips underneath black epoxy are light
sensitive, but enough of them are, they all got covered
with the same material. There is chip scale packaging
with glob top, which is used in things like digital
clock time pieces. The black material is a droplet of
epoxy, placed over the silicon die. For protection.

Bare CPU die exist, but they're covered in thermal paste
and have a heatsink on top, so light exposure is a
bit limited.

   Paul