An Accurate Analog Multiplier and Divider

In the time-division multiplier the product x
₁
·x
₂₁
and amplitude modulation with X
₂
. The circuit can be arranged in such a manner that division by means of a quantity x
₃
can be carried out simultaneously, the output being x
₁
·x
₂
/x
₃
. When transistor switches are employed the error is 1·10
^-4
machine units only. The zero error for X
₂
, used for amplitude modulation, can be reduced to 2·10
^-5
machine units.