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The factor keyboard was set up for scanning. I intend to fire off an interrupt when a key is pressed. This breaks my rule number 1: Do No Harm to the Equipment! But this piece of gear has been stripped before I got them. ( I have three of them. Good for spares!) ANALYSIS: The switches are a To turn this keyboard into an interrupt based keypad from a keypad is run by scanning. You first have to remove all the scan lines. Then you can run a logic ground to each switch (daisy-chained). Next, I have ...
Design: As an aircraft flies overhead, it receives radio signals in a 360 degrees circle around the aircraft. So these radio stations must be placed into a database, which contains the address of the main Db. This database must be updated every fifteen minutes or so, for an aircraft doing 100mph. The following things will happen if the selected frequency is in the range: Your RMI flag will now turn off (means it's good). Your RMI will display TO or FROM. Your RMI needles will now the steerin ...