TY  - BOOK
AU  - APARNA M AND JAYASHREE B
AU  - Mr.C.THIRUVENKATESAN
TI  - ATMEL 89C51 MICROCONTROLLER BASED HARDWARE MODELLING OF MESSAGING SERVICE FOR HANDICAPPED PERSONS(DEAF/DUMB) OVER TELEPHONE LINE
U1  - 4.16 
KW  - MESSAGING UNIT USING IN LCD.ASCII CODES ARE GIVEN TO LCD AND WELL CONVERTED IN TO CORRESPONDING DTMF SIGNALS
ER  -