The IC circuit utilizes the principle of digital memory. The digital signal and program which cannot be changed is put in IC produced from the IC factory. This is called as rom. The future kit apply IC ROM in microchip from sealed with the imprinted connected pattern.

Technical specifications:

- power supply: 3VDC or 12VDC (select jumper)
- consumption:  75mA max. at 3VDC
- dimensions: 1.21 x 1.77 inches.