8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes : Forum / topic http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2008 Rickey's World contact@nospam.com (Ajay Bhargav) contact@nospam.com (Ajay Bhargav) Thu, 08 Jan 2009 23:26:39 -0800 Thu, 08 Jan 2009 23:26:39 -0800 http://backend.userland.com/rss e107 (http://e107.org) 60 Search Search 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes query http://www.8051projects.net/search.php Query about number lock system http://www.8051projects.net/forum-t10995.html

I read ur article about a programmable number lock system from the below site
http://www.electrofriends.com/projects/number_lock/page2.html

My classmates decided to take it as our project. We read thr article and found the following queries.

1. HOW CAN I UNLOCK AN ELECTRONIC DEVICE ?. I WANT TO LOCK A COMPUTER
HOW CAN I CONNECT IT.
2. CAN I USE THE SAME CIRCUIT TO LOCK/UNLOCK A DOOR OR WINDOW?. IF YES PLS LET ME KNOW HOW TO.
3. ISTHE 8051 NEEDED TO BE CONNECTED DURING OPERATION?

I WILL BE GLAD IF U REPLY TO OUR QUESTIONS AS SOON AS POSSIBLE.

THANKS RISHI NAIR.

]]> Mon, 21 Jul 2008 02:43:25 -0700 http://www.8051projects.net/forum-t10995.html Re: Query about number lock system http://www.8051projects.net/forum-t10995.html
you need to cover the device to lock it.
e.g . to lock a phone you cover the keypad and stuff..

to lock a computer you can put password on bios or something like that.

yes circuit can be used for door or a window or a safe etc.

you can make project as per your needs, but you need a logic. to make things work.
using a controller makes your work really simple, you program it and put your logic inside and controller work as per your logic and very less hardware required for that.

There is one more project "electronic lock using keypad and lcd" made using 8051 in the download section. you can use it if you want.]]> contact@nospam.com (Ajay Bhargav) Mon, 21 Jul 2008 07:28:20 -0700 http://www.8051projects.net/forum-t10995.html