Is fake solar powered calculators a new thing or am I misremembering my childhood? I remember entertaining myself[1] by covering the solar cell and watching the

Is fake solar powered calculators a new thing or am I misremembering my childhood? I remember entertaining myself[1] by covering the solar cell and watching the screen go blank. Edit: nvm, YouTube comments and even a sibling comment to this mentioned the same thing, my childhood memories are real. After watching the YouTube video the guy took apart five calculators and only 2 had fake solar cells, so not what I expected. [1] yeah, pre Internet entertainment was boring in comparison.