And the cost of computing is much less than senary triangular B-B patches.

这种方法在保证精度的情况下计算量次B-B面有大的减少。

Then the decimal base which is composed by74LS90 and 74LS08 and senary counting circuit.

然后又由74LS90和74LS08组成的十进制和进制的计数电路。