1. An apparatus for analog/digital conversion and multiplication, said apparatus comprising: conversion circuitry for converting an analog input to a digital output, said conversion circuitry configured to refine in succession said digital output by processing said analog input, said conversion circuitry completing conversion when said digital output becomes indicative of said analog input; and multiplication circuitry configured to generate a digital product equivalent to the product formed by multiplying a digital operand with said digital output indicative of said analog input, wherein said digital product is determined prior to said digital output becoming indicative of said analog input.