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Back in 1985 I bought a cheap 4 function calculator. It was solar powered with no battery inside. This of course caused it take a few second "to warm up".( to charge up the internal capacitor, actually)
It's 2009 and I'm still using it. I can't buy a replacement, because everybody puts a battery in nowadays, so they don't have to "warm up ", and the batteries wear out in 10 years or so and are non-replaceable. I'll be using the old calculator until I die, I expect.
I expect to use the liseuse until it either croaks, I croak, or I can't get a replacement battery, whichever comes first.
The problems we have with the readers are not hardware, but software, which can be upgraded as available.
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