characters are large because here we do not consider 0 to 10, united font etc.From the above data it is clear that our proposed layout divides the load on both hands equally and hand switching is also maximize. Comparing with other keyboard layout we can say that, our proposed layout is optimal. 

## 6 Conclusion

The use of Bangla keyboard layout is increasing day by day. So it is the time to research on this important field. 

The Bangla academy also can come forward to finalize such an important matter and would produce an optimal keyboard layout and circular throughout Bangladesh for new generation. Our keyboard layout shows maximum hand switching than any other exiting keyboard and also cost effective because frequently occurred letter is distribute closer to finger. Experimental results show that our proposed layout is more scientific and user friendly. If our keyboard layout is implemented, we hope that people will be benefited.

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