There is no audio, so please turn on the subtitles. I have built myself a dual-CPU mobile computer using a 6502 CPU. The purpose is to use a homemade floating-point interpreter for convenience. The 1st CPU runs the interpreter in the main computer part, while the 2nd CPU acts as an I/O processor for the keyboard and LED display module. Specifications, Dimensions: 262 mm x 182 mm x 55 mm, . Enclosure material: die-cast aluminum. Power source: 5V power supply or Ni-MH battery x 4 . CPU: R6502A x 2 (clock 2MHz). Main computer memory. Battery backup SRAM 16 kB (user program, system variable). PROM 8 kB (interpreter system). Display: 40 x 7 characters LED display (HCMS-2912 x 35). Keyboard: 48 keys, (DS660RCW x 48). System software: homemade floating-point interpreter, single-precision type, with built-in elementary functions. A detailed description including schematics and source code is available on Hackaday.