Clones: DM-1XC
The DM-1XCC (David & Michael 1XC Compact or CreditCard) is a series of credit-card sized calculators running Voyager series firmware. The series consists of DM-15CC, DM-16CC, DM-12CC, DM-11CC, DM-10CC. All calculators use the same hardware, but differ in keyboard and firmware (which can be changed with an upgrade port). These devices are essentially functional clones of the original HP models.
Read more about this topic: HP-10C Series