Hand held calculators are now used for adding up blows landed by boxers. They are fitted with a button, to punish warnings, by deducting blows.
SCORING BLOW:
A Scoring blow, is a blow made up with the knuckle part of the clenched fist of either hand on the scoring area with force and without infringing the rules.
SCORING AREA:
The front of the head and body above the belt excluding the arms. The belt is the natural waistline from the highest part of the pelvic bone to the navel.