80. Can the hp 39g+ be 'overclocked'?
Thanks to Al Borowski for the reply below:
See also my comments about programming in HPG-CC on my Help page in the section on Programming.
81. (39G/40G only) Why have rows and columns of keys have stopped working on my HP39G or HP40G?
This is quite a common fault in the 39G and 40G. The keyboard had design issues. At our school we had a return rate of 10-20% on our 39Gs. Sometimes you can get temporary relief by gently twisting the calc longitudinally. ie around the axis running along the line [d/dx], [TAN]  etc.
Don't overdo this for obvious reasons. Also obviously, you do this at your own
risk!! You can also press down down (hard!) on the HP label below the middle of the screen. While you're pressing down the keys will probably work but often only while you press down. Usually once it starts
occurring it will continue to recur and will infect the whole row and then possibly others. Sorry. No point in false hopes.
82. I've installed the Comms software, so why is my PC not recognising the calculator when I plug it in?
There seems to be some sort of bug in the installation routine for the Communications software. This is the software that allows you to send/receive programs, notes and aplets from the PC to the calculator or vice versa. All peripherals (hardware devices plugged into the computer) such as printers or scanners require a driver to allow them to communicate with the computer. Think of the driver as an interpreter that allows the computer to speak to its connected devices (peripherals). On quite a few computers this driver doesn't install properly.
The symptoms of this failure to install the driver are that when you plug in your calculator the software doesn't acknowledge it - the "searching torch" image continues to be displayed, indicating that no calculator is present. You may also find that the Windows "Found new hardware" wizard pops up as soon as you plug in the calculator.
If the "Found new hardware" wizard is showing then do the following:
After the wizard finishes you should find that the "searching torch" will now give way to the normal image displayed when the calculator is connected correctly, which is a folder view. The comms software is now waiting for you to select a folder containing the aplets/programs/notes that you want to download, or to specify a folder into which you want to upload material from the calculator. You can find instructions on this on my help page here.
If you're still having trouble, or if you have cancelled the wizard before reading this then try the following:
If you've done all of this and you're still seeing the "searching torch" image when you run the software with the calculator plugged in then try a different USB port. The USB ports on the front of the computer are notorious for not working properly and most modern computers have multiple USB ports. Try them all.
If none of this works... Sorry. Over the past five or six years I have run into just four computers, all laptops, that just would not work with the calculator no matter what I did. You may have one of these. If so, I can't help.
Last modified: 19 Dec 2007 Sitemap Home Contact Me