Pascal (unit) dB SPL, or 20 µPa. The airtightness of buildings is measured at 50 Pa. The units of atmospheric pressure commonly used in meteorology were formerly the bar, which was close to the average air pressure on Earth, and the millibar. Since the introduction of SI units, meteorologists generally measure pressures in hectopascals (hPa) unit, equal to 100 pascals or 1 millibar. Exceptions include Canada, which use kilopascals (kPa). In many other fields of science, the SI is preferred, which means Pa with a prefix (in multiples of 1000) is preferred. Many countries also use the millibars. In practically all other
Turbo Pascal like the object files used in other languages such as FORTRAN or C. For example, the line codice_1 in a program included the unit called crt; the codice_2 is the mechanism for using other compilation units. codice_3 and codice_4 were the keywords used to specify, within the unit, what was (and what was not) visible outside the unit. This is similar to the codice_5 and codice_6 keywords in other languages such as C++ and Java. Units in Borland's Pascal were similar to Modula-2's separate compilation system. In 1987, when Turbo Pascal 4 was released, Modula-2 was making inroads as an