How to make a 10x10 multiplier using 5x5 multipliers?

[ASIC_intl]

Make a 10x10 multiplier using 5x5 multipliers.

 

[dcreddy1980]

10x10 multiplier

completely with 5x5 multipliers or an adder can also be used along with 5x5 multiplier.

 

[ASIC_intl]

Re: 10x10 multiplier

can u make a 4x4 multiplier from 2x2 multipliers?

 

[Nir Dahan]

10x10 multiplier

I think he was asking whether adders are allowed or do you have available as building blocks ONLY 2x2 multipliers?

ND.
https://asicdigitaldesign.wordpress.com

 

[bunalmis]

Re: 10x10 multiplier

a,b,c,d are N bit, X * Y is 2N bit.

X=a+b
Y=c+d

X*Y=(a+b)*(c+d) = (a*c)+(a*d)+(b*c)+(b*d)

 

[ASIC_intl]

Re: 10x10 multiplier

What are a, b, c, d ? Why are they N bits wide?