  We present precision lattice calculations of the pseudoscalar decay constants
of the charmed sector as well as determinations of the bottom quark mass and
its ratio to the charm quark mass. We employ Nf=2+1+1 dynamical quark gauge
configurations generated by the European Twisted Mass Collaboration, using data
at three values of the lattice spacing and pion masses as low as 210 MeV.
Strange and charm sea quark masses are close to their physical values.
