The C128 DCR is a computer system with a separate keyboard, internal power-supply, disk drive (1571) and a motherboard. The C128 (DCR) is the successor of the Commodore C64. The C128 (DCR) computer has two processors, a 8510 and a Z80. The C128 (DCR) has three different operating modes: C64 mode, C128 mode and CP/M mode.
If you compare the C128 (DCR) with the C64 the C128 (DCR) has a bigger memory, faster processor and better graphical possibilities.
The C128DCR is the successor of the Commodore C128D. CR stands for Cost Reduced: Both the C128 and the 1571 pcb are integrated into one pcb, the case is metal instead of plastic.