|Re: Reading HP-67 cards...|
Message #4 Posted by David Ramsey on 12 Feb 2006, 1:38 p.m.,
in response to message #1 by gr8patra
As another reply noted, it sounds as if your card reader might be working fine, and you're just using a blank card or a card with a program you don't understand on it.
Try this: enter a small program, record it to the card, then turn the calculator off and on and try to read the program back in. Here's how:
1. Turn calculator off, then on.
2. Slide upper right switch to "W/PGRM" position.
3. Type [f] SST A (that's the yellow "f" key, the key labelled "SST", then the key labelled "A")
4. Type ENTER 2 X R/S (4 keys total).
5. Slide the switch back to "RUN", enter any number, and press the "A" key.
If you've entered the program correctly, pressing the A key will double the number.
Now slide the switch back to "W/PRGM" and feed the card through. This will overwrite any program on the card, by the way!
If no error occurs, turn the calculator off, then back on. Enter a number and press the "A" key and notice that you now get the reciprocal of the number-- this is the default function.
Insert the card into the reader. When it's done, enter a number and press "A". If the number on the display is doubled, congratulation! Your card reader works perfectly.