hai friends
please help me how to interface 8051 with GSm&how can i use commands.please suggest complete realtime with simulator.iam using top view simulator

Hi sks...good evening to you too.

Hi sashi,
good evening. how r u?

dtmf reciver is mt8870
but i want dtmf transmiter
plz reply now...

Hello pdi '
good after noon. there is some doubt in my code which is posted today. please clear my doubt. thanks
sks

hi sashi
good morning. how r u?
sks

hi everyone good afternoon

Good morning sks..

Hi All
Good morning
sks

hi i need some help regarding the following AT89C52 code using timer2 in auto reload mode:
T2CON EQU 0C8H
RCAP2L EQU 0CAH
RCAP2H EQU 0CBH
TR2 EQU T2CON.2
TH2 EQU 0CDH
TL2 EQU 0CCH

ORG 0000H
LJMP MAIN

ORG 0023H
LJMP REC

MAIN: MOV IE,#0B0H
MOV P2,#0FFH


REC: MOV T2CON,#020H
MOV RCAP2H,#0FFH
MOV RCAP2L,#0E0H
MOV TH2, #0FFH
MOV TL2, #0E0H
MOV SCON,#50H
SETB TR2


H_1: JNB RI,H_1
MOV A,SBUF
MOV P2,A
CLR RI
SJMP H_1
END

but after loading this code in the IC there is no result i.e. there is no serial communication between the PC & the hardware..