Comments on: Interfacing Keypad with 8051 Microcontroller using Keil C

By: Styllish Harsha

Styllish Harsha — Thu, 09 Nov 2017 05:26:00 +0000

lcd.c(89): error C267: ‘Lcd8_Set_Cursor’: requires ANSI-style prototype
it was showing this error msg

By: Tejashree Shelar

Tejashree Shelar — Fri, 14 Apr 2017 04:36:00 +0000

How to add two digit number and display it on LCD?

By: soorya

soorya — Thu, 16 Mar 2017 06:34:00 +0000

can anyone give me the advantages of this system over sensors..if any..also the applications

By: hari

hari — Mon, 13 Feb 2017 07:00:00 +0000

bro i want to take string i/p from keypad help me

By: Ligo George

Ligo George — Sun, 27 Nov 2016 08:56:00 +0000

In reply to farhan.

Kindly use our forums ( https://electrosome.com/forums/ ) for asking dobuts autside the scope of above article.

By: farhan

farhan — Sat, 29 Oct 2016 15:46:00 +0000

sir i have to control speaker system with micro controller with keypad,, so, can you help me plz, how i connect speakers with micro controller and controlled with keypad

By: Ligo George

Ligo George — Sun, 24 Jan 2016 06:02:00 +0000

In reply to pulluri naga vikas.

As per the program, it will detect only the first checking. For detecting multiple keys you can try like this article : https://electrosome.com/reading-multiple-pressed-keys-matrix-keypad-pic-microcontroller/

By: pulluri naga vikas

pulluri naga vikas — Sun, 03 Jan 2016 03:45:00 +0000

if two switches are pressed at a time what wil happen…?
i need switch matrix in that 4 or 5 switches pressed at a time…

By: Ligo George

Ligo George — Sat, 21 Nov 2015 09:06:00 +0000

In reply to Jyoti. You need to modify the program for that. Just try replacing while(); in the checking with if()

By: Jyoti

Jyoti — Sat, 21 Nov 2015 04:52:00 +0000

In reply to Jyoti. So, Mr Ligo, Can you please tell me this one please.