On 9 May 2008 at 16:51, Pete Smith wrote: > That looks more like it. I was thinking of using a 1PxT rotary switch, > but with these ICs it looks like I need 2PxT, to switch one each of the row > and column inputs. But that raises another possibility - might I be able > to use a keypad of some sort, with a latching buffer, to provide the > required 4-digit codes? > > 73, Pete > A keypad is what the 922 was designed for. The "data available" line could latch the data in to a latch.
Dave - WB6DHW <http://wb6dhw.com>
