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Obsolete EPROM memory chip

BEST VIEWED ORIGINAL SIZE

This is an Erasable Programmable Read Only Memory (EPROM for short). Our computers in 1980's used to employ these chips to hold the BIOS. Nowadays we use FLASH chips. The thinnest electrical tracks on the chip must be 2 microns thick. You can see them if you view the photo in original size. Did you notice 2732 (the part number) in the upper right corner of the chip?

 

Sorry if you are not into electronics. In this photography group my aim is to demonstrate that one can capture such submillimeter features by using macro lenses. I used a 70 mm SIGMA macro lens. Of course a tripod, timed shutter to prevent camera shake and a LED light source are necessary for a successful shot.

 

ORIJINAL BOYDA BAKMANIZI TAVSIYE EDERIM

Bu bir Silinip Programlanabilir Sirf Okunabilen Bellek. 80'li yillarda bilgisayarlarinizin BIOS'u bu chiplere yazilirdi. Simdi FLASH bellek kullaniyoruz. 2 mikron incelikteki yollari resmin orijinal boyutunda gorebilirsiniz. Ust sagda silikon uzerine yazilmis 2732 ye de dikkatinizi cekerim.

 

Belki elektronikci olmayabilirsiniz, ama fotografla ugrasiyorsunuz. Milimetrenin 1000'de 1'i kalinligindaki bu yollari mikroskopsuz nasil cekersiniz? Burada amac bu. Ben SIGMA'nin 70 mm makro lensini kullandim. Arti tripod, arti LED isik kaynagi, arti zamanlanmis deklansor. Bunlarsiz bu resim olmazdi.

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Uploaded on February 9, 2019
Taken on April 28, 2009