Descripción de Kovac K-80M antique calculator:
This is an old Kovac K-80M tube-display calculator I found at a flea market. It's large and heavy (relatively speaking) and powered by four C cells. The display works, but seems to have a small delay for some reason. It works better once it's heated up a bit, but the delay never goes away completely. I guess it's just old electronic components having drifted from their original value in time. Also, apparently random numbers flash on the display for a very brief moment before the result appears. And yes, I know I'm messy. :P
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