Comments on: 8051 Microcontroller port programming

By: Aspen

Aspen — Fri, 23 Dec 2011 13:55:40 +0000

An inlteligent answer – no BS – which makes a pleasant change

By: taniya

taniya — Tue, 13 Dec 2011 21:22:51 +0000

no1 will reply you thakar.
in is used in RAM and memory design ckts, programming on every scale

By: tushar thakar

tushar thakar — Mon, 12 Dec 2011 09:34:16 +0000

sir pls tell me where microcontroler used and why it is required

By: taniya

taniya — Mon, 05 Dec 2011 10:32:49 +0000

sir will you kindly help me in writind a program that use 8051 ,once some binary 8 bit code is stored and burned in it then anyone can “invalid”? it is very urgent.

By: Napster King

Napster King — Mon, 14 Nov 2011 17:43:40 +0000

Dude, its tym dat u stop copying content from 8051 Microcontroller and Embedded Systems by Mazidi and use ur brain and understanding about 8051 to use this precious web page………………….

By: HARI KRISHNAN

HARI KRISHNAN — Fri, 04 Nov 2011 12:04:48 +0000

Sir we needed to PROGRAM and full details of the MULTILEVEL PRODUCTION FOR GAS ACCIDENT LEAKAGE AND DETECTOR BY USING AT89C51 MICROCONTROLLER.

Sir please send the details for following my address…………

HARI KRISHNAN………………..

By: deepa

deepa — Sat, 15 Oct 2011 10:23:45 +0000

Why pullup resister are used??

By: nets mertia

nets mertia — Wed, 12 Oct 2011 15:13:38 +0000

kya yr puti mazidi chap rkhi h …………..

By: vijay parmar

vijay parmar — Fri, 23 Sep 2011 03:25:11 +0000

mov a,#ffh
mov a,p0
end

if i want to use port as output port ands end data ffh …so in above instruction it is configure as input port or send ffh to port.here it use same instructions for input configuration and send data to o/p port…………..

By: ashwini

ashwini — Fri, 09 Sep 2011 13:22:38 +0000

why the ports in 8051 are loaded with 0xff instead of 0×00????
wha tis the value of internal and external pull up in 8051???