Answer / v.ramakrishnan

In such circuits the frequency is internally divided by 12
to get 0.965MHz...(11.59/12=.965).

It is done so becoz the time required to fetch,decode &
execute instructions is about 1.0852 microseconds.Hence the
frequency would be 1/1.0852=0.924 MHz which is nearly equal
to 0.965 Mhz.

Answer / sachin

bcoz this crys osc is used as serial and as well as parallel
mode according to need in ckt.

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