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lock project---password display problem.

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kenleung

Sun Apr 19 2009, 11:19AM

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I am designing a project which is a keypad lock My problem is that if i want to hide the password being displayed by ******,how can i write the program? actually it is aimed to ensure that the persons standing behind cant see the passoword entered by the users.
thanks

rongo024

Sun Apr 19 2009, 01:26PM

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what is your display device??

aurangozeb,Bangladesh.

kenleung

Sun Apr 19 2009, 09:11PM

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lcd 32X04

Ajay Bhargav

Mon Apr 20 2009, 03:53AM

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well for every key pressed, display * instead of the key value.

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kenleung

Tue Apr 21 2009, 08:06AM

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yeah, exactly........how can we do?we write asm format

ExperimenterUK

Tue Apr 21 2009, 04:02PM

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kenleung wrote ...

yeah, exactly........how can we do?we write asm format

There really isn't a problem if you understand how the program works.
If you don't, this is a good time to study it and find out

Find the code where you get a character from the keyboard and pass it to the display routine.

Set a flag to show whenever you are in "Password" mode.
Whenever this flag is set, pass a "*" instead of the proper character.

Ajay Bhargav

Wed Apr 22 2009, 02:17AM

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are you designing your own project or you're using the one on website?

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kenleung

Wed Apr 22 2009, 01:12PM

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i am designing..but no clue on doing that function

ExperimenterUK

Wed Apr 22 2009, 05:10PM

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kenleung wrote ...

i am designing..but no clue on doing that function

Do you have any LCD display code written ?.
If so, please post it.
If not, take a look at the LCD tutorials in the tutorial section.

[ Edited Wed Apr 22 2009, 05:14PM ]

Ajay Bhargav

Thu Apr 23 2009, 03:32PM

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its better if you post your code here. to see what you have done and guide you better.

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shirazi2589 | 05 Sep : 14:55

hey ExperimenterUK
Vehicle Tracking using GPS (New Ideas regarding proje
awaits a reply

shirazi2589 | 05 Sep : 11:52

Nisar Bhai P Uyemera ki zarrorat hai link hai to bhejiye

Anonymous | 05 Sep : 08:46

any suggestion abt the lcd in 4 bit mode written bottom can be mailed to suji.90@gmail.com

lcd in 4 bit mode | 05 Sep : 08:44

i have only 4 bits of p2 available,the upper nibble is already in use.so,how should i write
#define lcd_data ------
i can't write like 1/2(p2) or #define lcd_port P2.because this may disturb the application running on p2.4,p2.5,p2.6,p2.7
please anyone give me a suggestion

Anonymous | 05 Sep : 06:47

hi..i want to know whether active and passive rfid have same protocols or what?

shirazi2589 | 05 Sep : 05:05

@sweety1894 ...make a new thread and post the work you've done.Let us see what mistake prevails

sweety1894 | 05 Sep : 04:28

Hi everyone.
I am doing project interfacing keypad with microcontroler

i am trying with 3x4 matrix keyboard &16*2 lcd. I googled two days gone through many codes but unable to make it. Even gone through tutorial on this ite also,
http://www.8051projects.net/keypad-interfacing/8051-programming.php
Still i din get proper complete program. I knew its not nice to ask complete code from others.
Since i am getting confused to catch the concept, can somebody give me basic assembly code to
If u upload the schematic of the code will help me better to mingle with proteus, If does not have i will make it.
After all i just need basic code & full information of project.. If u really want myself to design, please guide me some procedures or tips. Because for the past two days i am trying hard but end up with somewhere else.

Thanks in advance.

superknoty | 04 Sep : 12:28

็Hi , Newly need help on this top-pic about analog to digital

http://www.8051projects.net/forum-t37383-0.html#post_37391

Abhinav.Chaurey | 04 Sep : 11:46

hi ssp123 yes Nokia C 2700 what to do with it

ssp123 | 04 Sep : 09:53

NOKIA C 2700

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