- Letter:
AllA(5)C(5)D(11)E(4)F(4)H(3)I(25)J(5)L(2)M(5)N(5)P(3)R(2)S(25)T(23)W(6)X(4)Y(11)Digital(3)More
- Operating System:
AllWindows 95(6)Windows 98(6)Windows Me(6)Windows XP(6)Windows Vista(6)Windows 7(6)Windows 8(6)Windows 10(6)Windows 2000(6)Windows Server 2003(6)Windows Server 2008(6)Windows Server 2012(6)Windows Server 2016(6)Mac OS Classic(6)macOS(6)Linux(6)Android(6)iOS(6)