rewrite an existing matrix into a matrix with 0 and 1

I have a matrix A with size 10x10 and each element is a number from 0 to 8, I want to make another matrix that has the same size as A but for the number that bigger than 4 are become 1, and from 4 to 0 are become 0.

Answer 1

[KSSV]

A = randi(8,10,10) ;   % random matrix for demo
B = zeros(size(A)) ;
B(A>4) = 1 ;