Serial Communication with a differnce!

Hey i'm working on a project that requires me to use a 4 X 4 matrix keypad (interfaced to uC) to communicate with computer via serial port. A server software is designed (and installed in OS) to detect my module(consisting of uC,keypad n LCD) when I send msg in a predefined format.That format contains alphabets also!
Now my question is :- HOW DO I SEND ALPHABETS VIA A 4 X 4 KEYPAD WHICH HAS NOTHING BUT HEX KEYS? (for ex: how to send "Rickey"?)

plz reply soon

you need to write code in such a way that your hex keypad becomes alphanumeric keypad.. take example of a mobile phone keypad.. it has 12 keys to work for a full alpha numeric keypad. you can also make a simple keypad like that.

Just stress your brain a little. think of the simples way you can do this

i think u can make use of hex codes or else convert the alpha-numeric codes to ASCII codes. I think it may suite it.

i think u can make use of hex codes or else convert the alpha-numeric codes to ASCII codes. I think it may suite it.

i wud like to know what exactly does the above statement mean???

@deepu027
ajay have u the perfect example of the implementation i can not think of any better one ...

out of the sixteen key u can have

1 2 3 4
5 6 7 8
9 0 < fun > < shift>
<enter> <del> . < caps>

fun1[] = {'1','2','3','4','5','6','7','8','9','0',}
fun2[] = {',','a','d','g','j','m','p','s','v','y',}
fun3[] = {'-','b','e','h','k','n','q','t','w','z',}
fun4[] = {'+','c','f','i','l','o','r','u','x','*',}

now writing "shyam"
key pressed result string
<8> 8
<fun> s
<shift> s_
<4> s4
<fun> sg
<fun> sh
<shift> sh_
<0> sh0
<fun> shy
<shift> shy_
<2> shy2
<fun> shya
<shift> shya_
<caps> shya_
<6> shya6
<fun> shyaM // oops error M shud be m
<del> shya_
<caps> shya
<6> shya6
<fun> shyam // hurray...
<enter>

"shyam" displayed
!dance
!dance !dance

shyam you did correct you can take nokia keypad in mind so that you can have special characters too