Let's settle this. If you check with Texas Instruments like I did, the order is 85, 82, 80, 92, 83, 86, 92+. They did not mention the 81 because it's discontinued. Ticalc.org claims that it was first though. 81, 85, 82, 80, 92, 83, 86, 92+ is correct, no room for argument.