HP 12C hardware emulator.YOU NEED TO HAVE THE ROM DUMP OF THIS CALCULATOR TO USE IT.(see http://sites.google.com/site/olivier2smet2/home/go1xc)- portrait and lanscape mode.- automatic save and load of state.- ‘ON’ only active on ‘longtouch’ to avoid mistakes.tests supported (use ‘press on’ menu when calculator is off then press ‘+-/*,’.- speed up from x1 up to x4.- full textual programming mode (needed due to keyboard remapping).