This means that this particular woman is currently in her second pregnancy and that the previous pregnancy was either spontaneously or electively aborted. There is an acronym to help understand this... GTPAL. G - The number of times the woman has been pregnant, including current pregnancy.
The Ancient Romans developed the Roman hand abacus, a portable, but less capable, base-10 version of the previous Babylonian abacus. It was the first portable calculating device for engineers, merchants and presumably tax collectors.he name semuncia denotes 1/2 of an uncia or 1/24 of the base unit, the As. Likewise, the next character is that used to indicate a sicilicus or 1/48 of an As, which is 1/4 of an uncia. These two characters are to be found in the table of Roman fractions on page 75 of Graham Flegg's book.
It is unknown when exactly were developed first devices to facilitate calculation, such as the counting board, or abacus. The counting board was invented when someone grasped the idea of placing pebbles or other objects in columns marked on a flat surface, and assigning an order of units to the objects in each column.ater, loose objects in columns were replaced with beads that could slide along parallel rods. There is an unproved information, that similar to abacus device was used in Babylonia as early as 2400 BC. The word abacus itself is a Latin word, which comes from Greek Î¬Î²Î±ÎºÎ±Ï (board or table).