Bowling ball random when impacting a full rack of pins on the first delivery of a frame, and sometimes when hitting downed "dead wood" pins on subsequent deliveries—the candlepin bowling sport is the only major one that allows fallen pins, provided no part of any fallen pin extends more than 24 inches (61 cm) forward of the head-pin spot, to remain on the lane's pindeck to be used in knocking down more pins with the next ball delivery in the same round—up to three balls are delivered, much as in duckpins, in each round of candlepins for one bowler. Bowling ball A
Ten-pin bowling process then. However, this all changed with the introduction of automated electronic scoring systems. The general public only had to enter their names into the computers and everything else was done automatically. Re-investment in the 1980s led to the construction of many bright, modern and attractive sites and began the second golden age of bowling. During the late 1980s and early 1990s the number of ten-pin bowling alleys across the UK rose to over two hundred. This was higher than it had ever been in the 1960s, then the peak of the sport's popularity. Bowling has experienced another decline since