1 / 4KB of storage space

What is holding this smiling gentleman? Toaster? Lawnmower? Maybe a part of an internal combustion engine? Neither the first, nor the second, and not even the third, as the shrewd habrauser has already guessed. This is 4KB old school memory manufactured by IBM. The photo you are looking at weighs about 80KB, so this piece of hardware is enough to save about 5% of the file.

CNET's chief editor Lindsey Tarrentin (Lindsey Turrentine, @lturrentine ) took a picture of her husband, who had dug up a rarity in the barn of her grandfather — obviously, the memory was inherited.
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UPD. Persistent habrauser claim that the device stores a quarter of a kilobyte of memory, and not 4 KB, as Lindsey claims.