Weekly Photo Challenge No. 5 -Technology (Old or New)

Not a particularly interesting image, but interesting for what it is: a section of core memory.  Each toroid was 1 bit (8 bits to a byte).  The particular core section that this image came from had 4096 bits (512 bytes), which measures 6.75x6.75 inches!  The computer from which it came was demolished circa 1978; some of those bits may well have held code I wrote.  It was hand-made (see the solder joint in the upper-right corner).  The wires were much straighter, but many students fingers poking it have seriously damaged it (sigh).