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I'm back again with another BCD question. I can convert a number to BCD or a decimal to two BCD nibbles. But I need each nibble to be to base 10, i.e. the range is from 0 to 9, not 0 to 15. How can this be done please? Alternatively, since the decimal nibble is never greater than 9, can I map...

My knowledge of PICs is limited to Picaxe chips so I wonder if people can tell me if this application is too big for a Picaxe? I want to remotely control a radio by sending a control file to a Picaxe via a serial link. The Picaxe then reads the file and configures radios, modems and aerials...

I am generating a 16 bit number, upto 15999, and want to address 16 output pins to programme a frequency synthesiser. I'm sure the answer is in the archives, but after 2 days of looking, I can't find it. Sorry if it only came up last week. Question 1 How do I split the number into 2 8 bit...

I am trying to control a frequency synthesiser. I need 4, 4 bit BCD outputs. I need pins 0-3 to be variable1, pins 4-7 variable2 etc. I'm just trying with 8 outputs on an 18X pic before going up to a 40x for 16 output lines. Can anyone give me any ideas please? I have found out about masking...