Microcontroller Programming

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AT89C5115 for example

Check out their product list you can find lot of them
 


No, ponyprog can work with usb to serial converts but not with ordinary converters.
 

Re: Atmel microcontroller>......................

hi,i download Atmel filp.
so can u plz give me the circuit of "RS232" mode in filp.....................
thankx in advance...................

---------- Post added at 10:31 ---------- Previous post was at 10:30 ----------

clarify plz...................
 

i found this............
but in this the disadvantage is one connection from pc to uc for Programming,and another is for UART..
and philips chip it is only one ,which is UART,can do both programme&UART comm.
no Extra microcontroller needed for programming.........
just simple........
 

hi can u help me in keypad interfacing..i have 4x3 keypad and im using zilog specifically Z8f6421..thank you
 


tnx rabin!

---------- Post added at 12:52 ---------- Previous post was at 12:33 ----------

visit "https://docs.google.com/Doc?id=ddmkwx3z_21fb4jxzhc"

tnx rabi..btw can u teach me how to know the scrolling... for example if i pressed 1 from the keypad and i have 4 seven segment the output would be 0001 and if i pressed 2 the would be 0012

thank you
 


u can do this by using BCD concept.

i.e:----(15)decimal=(0001 0101)bcd............


now just left shift 4bit..................

"when u press 1 then
int o;
o=0000 0000 0000 0001
when u press any next key say 3
o=o<<4;
o=o|input;"
and study BCD to Binary and vice versa conversion.
u may found BCD<->binary lib in internet
 


hi rabin...can u give me a sample code for 4x3 keypad or atleat a pseudo code...thank you
 

i think u want to make just like A calculator.??????????
then
i think ..........
1.check (PORTB|PORTC|PORTA|PORTD)==0?????????
if yes then ur disp=0;
2.if a key is pressed..i.e it is the 1st key.
3.if again a key pressed
<<4
|input
 

i think u want to make just like A calculator.??????????
then
i think ..........
1.check (PORTB|PORTC|PORTA|PORTD)==0?????????
if yes then ur disp=0;
2.if a key is pressed..i.e it is the 1st key.
3.if again a key pressed
<<4
|input

something like that but how the program goes?
 

something like that but how the program goes?

u may use externl interrupt for this.................
"oring" all the gate input and fed to external interrupt pin........
write code in ISR......according to ur logic
 

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