Connected Device Configuration and Connected Limited Device Configuration. These are the specifications for the basic JVMs that a J2ME device must support. CDC is for bigger devices, such as set-top boxes and PDAs. These will typically have more memory and more robust network connectivity. CLDC is for smaller devices such as mobile phones and pagers. CDC and CLDC are not really APIs (although CLDC does specify a basic API), but run-time environments. The APIs are exposed to the developer through a set of `profiles' (see below). In practice, there appears to be much more interest in CLDC, as most J2ME developers are working on mobile phone and low-end PDA applications. CDC implementations are available for upmarket PDAs like Compaq's iPAQ range.

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