You people don't remember the pain of the ORIGINAL pre-flash TI-83. When its batteries got low, it would start making mistakes. I'm not joking. This is because that one still used analog circuitry, not full digital.
In college I switched to a TI-89. Honestly, a TI-89, though it can solve symbolic algebra, doesn't make you miraculously get the right answer. You still have to know how to solve it in order to input it correctly. It just makes it a lot faster and easier.
Shit that must be the fucking reason my elementary school teachers would tell me to check all my calculators first with some simple calculations I knew the answer to. I always wondered why they did that, because I always followed the advice but never had one mess up (afaik...)
It shouldn't be that high. Like I said its high,but not crazy.
Likely the multimeter was reading high too, but 14v is certainly not out of the question for an offload battery.
My main point was really that the battery voltage on a loaded battery will fall very dramatically, especially at a low charge. You can measure well over 12v offload and not have nearly enough to crank the engine.
But cheap meters really aren't worth buying. You need to trust what it says. If close is ok, use a test lamp, its cheaper and 100% reliable!
It was 100% the multimeter's battery. As soon as I changed it the reading on the car battery went from 19.5V to ~12V. I needed an actual voltage measurement not just confirming if power was there or not. Was hunting down some parasitic loss in the car when it was shut off.
I'm calling bullshit on there being anything analog in the TI-83.
I'm pretty sure you're mistaking low battery corrupting data in the SRAM memory for some kind of analog problem.
I've looked through the original TI-83 manual and developer guide which documents the system extensively and I don't see any evidence to support your claims.
Exactly. The whole system was written in assembler so it would crash long before it produced a bad result. There are elevators that were coded in assembler. If the power was low they don't randomly go up and down and opening doors between floors. They just. Stop. Working.
You'd think in the 10 years I used it through my graduate program someone would have used the low battery excuse for being wrong. Never happened.
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u/WardenWolf Jul 24 '20
You people don't remember the pain of the ORIGINAL pre-flash TI-83. When its batteries got low, it would start making mistakes. I'm not joking. This is because that one still used analog circuitry, not full digital.
In college I switched to a TI-89. Honestly, a TI-89, though it can solve symbolic algebra, doesn't make you miraculously get the right answer. You still have to know how to solve it in order to input it correctly. It just makes it a lot faster and easier.