This is a small handheld PIC24-based CHIP-8 emulator game console. A cheap Nokia 1202 LCD is used as the display and a CR123A 3 volt lithium battery for power.
CHIP-8 is an interpreted programming language, developed by Joseph Weisbecker. It was initially used on the COSMAC VIP and Telmac 1800 8-bit microcomputers in the mid-1970s. CHIP-8 programs are run on a CHIP-8 virtual machine. It was made to allow video games to be more easily programmed for said computers.
The CHIP-8 instruction set only have about 35 instructions and ir very easy to emulate. The full firmware for the MCC8 only took an evening to write.