abhishek singh wrote:
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here i plan to be able to store data on audio tape.

1. every bit is predece by a clock pulse. this will be a negetive direction magnatization.
2. to store '1', positive direction magnetization is used.
3. no magnetization for a '0'.

at start o/p stays at zero. to store 0100001 pattren will be

uuuuuununpnununununpn

u = unmagnetized
p = positively magnetized '1'
n = negetively magnetized 'clock'

am i wrongly conceived. suggestions please.

Remember that tape has dropouts, which could change a one to a zero. If I were you I would use different tones for ones and zeros. Try listening to an old C64 tape ;-)

Best regards,

Mikkel C. Simonsen