what is a sequential radix-4Booth multiplier?

Answer 1

In a radix-4 Booth multiplier you look at 3 (overlapping) bits at a time and decide what to do with the multiplicant

Block Partial Product
000 0
001 1 * Multiplicand
010 1 * Multiplicand
011 2 * Multiplicand
100 -2 * Multiplicand
101 -1 * Multiplicand
110 -1 * Multiplicand
111 0


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