►Keypad Connections with AVR Microcontroller

[lightbox=keypad-avr.gif|Keypad connections with AVR Microcontroller|Keypad Interfacing]
[/lightbox]
Please click on the image to enlarge it

Circuit shown above is for demonstration and does not include any reset and crystal circuit. For practical use you need to have a reset circuit and crystal.


►Keypad Connections with 8051 Microcontroller

[lightbox=keypad-8051.gif|Keypad connections with 8051 Microcontroller|Keypad Interfacing]
[/lightbox]
Please click on the image to enlarge it

Circuit shown above is for demonstration and does not include any reset and crystal circuit. For practical use you need to have a reset circuit and crystal.

◄ Introduction  |  8051 Program ►

Conversation

Mon Oct 22 2018, 11:34 AM
JIMI吴
首席阿里巴巴zzzzzzzzzz
Mon Oct 22 2018, 10:58 AM
Sylvia
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Mon Oct 22 2018, 07:37 AM
Iris Spain
aaa快乐是大家的aaa
ExperimenterUK
Sat Sep 29 2018, 08:28 PM
Please post questions in the forum.
Sat Sep 29 2018, 01:26 PM
Ashfaq Ch
hi i have some AT89C51RC microcontrollers already programed. some one help us to how to download from AT89C51RC and after study and edit all corractions reload to AT89C51RC controller
shshistiem
Thu Sep 13 2018, 12:58 AM
hii!! some1 please let me know how i ll get rfid code to 8051 by WEIGAND mode
DrNossberg
Tue Sep 11 2018, 10:09 PM
is there anyone here?
Mon Aug 27 2018, 09:30 AM
bun
Hello everyone!
Sat Jul 21 2018, 08:21 AM
Dibakar Bhanja Chowdhury
By using a 555 timer how can I expand the range of the mobile phone jammer? Please reply me asap
Sun May 20 2018, 12:01 PM
justinb
how to write and execute a program that read the keypad button and display the number on 7 segment on intel8051 at89s52 in assembly language?

Downloads

Comments

PCBindex
Fri Sep 14 2018, 02:45 AM
sirkit
Thu Sep 13 2018, 04:46 AM
shshistiem
Wed Sep 12 2018, 10:36 PM
DrNossberg
Tue Sep 11 2018, 03:25 PM
ranjanvh
Thu Sep 06 2018, 02:28 PM
rbbhamre
Tue Sep 04 2018, 06:15 PM
Tressie
Sun Sep 02 2018, 02:20 PM
Sudhansudeep
Fri Aug 31 2018, 08:26 AM

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Forum Activity
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Sep 13 2018, 08:39 PM
First of all, by reading your reply, I abandoned m...
DrNossberg Avatar
Posted By DrNossberg
Thu Sep 13 2018, 03:49 PM
Hi, thanks you for your reply ^^ First of all, by ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed Sep 12 2018, 12:12 AM
HiThere are several issues here.The original 8051 ...
DrNossberg Avatar
Posted By DrNossberg
Tue Sep 11 2018, 08:08 PM
Hello everybody!First of all let me explain some s...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Sep 07 2018, 05:08 AM
The compiler thinks the micro doesn't have enough...
Sudhansudeep Avatar
Posted By Sudhansudeep
Fri Sep 07 2018, 02:59 AM
this is the build output message
Sudhansudeep Avatar
Posted By Sudhansudeep
Fri Sep 07 2018, 01:38 AM
Change the mobile number as [number removed] in t...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Sep 06 2018, 08:56 PM
I don't know what the problem is, I get no errors....
Sudhansudeep Avatar
Posted By Sudhansudeep
Thu Sep 06 2018, 01:12 PM
the code is Attachment ...
Sudhansudeep Avatar
Posted By Sudhansudeep
Thu Sep 06 2018, 12:48 PM
the code is same as u sent me for 16 chars