Ten-pin bowling ball contacts only the 1, 3, 5 and 9 pins; for a left-hander, the 1, 2, 5 and 8 pins. In order to count, a pin must be knocked over entirely. If the pin is wobbling as the automatic pin machine picks it up (or the machine itself knocks over the pin while it is wobbling), it is still considered standing and is not scored. Also, if a pin is moved, it does not change its designation. For example, if the 10 pin were still standing and the 7 pin slid into the 8 pin position, converting this spare would
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