thank u for your suggestion,the gain improved by 10mf between 1 & 8 of final lm386.But even though wave form appears to b of 5v, the microcontroller 89c2051 does see the change from 0 to 5v ?
slnt:
mov a, #031h ;dsp 1 on lcd
lcall txt ;till wav is low
jnb p3.0,slnt ;
lub:
mov a,#032h ;dsp 2 on lcd
lcall txt ;if thewa goes high
jb p3.0,lub
sjmp slnt
the executin abov dsplays 11111111......
and not 111112222221111 etc
thus proving that the rise is not seen by 89c2051 ?
I have resources to program ATMEL controller only/
Further i tried CD4093 for proper square wave ,the 35Mhz scope shows the square wave but MUC does not see
I am STUCK