1st Calculator v.1.13

1st Calculator v.1.13

Handy and useful expression calculator and unit converter with skins. Main features: completely customized interface with skins; fast call of the program from the keyboard; all arithmetic operations, more then 20 functions; editable lists of constants and unit conversions; recall previously used expressions; five result formats with changeable precision; automatic pasting and copying to the Clipboard; the program can run as a convenient icon in the System Tray area.