It is the circuit of sound effects recorded in the IC chip - a sort of sound generation circuit by means of digital memory (digital signal) and programmed in an IC. All the process was built unchangeably by an IC manufacturer. Such IC is so-called "OTP" (One Time Programable).

     Technical Data

     - Power supply : 3VDC
     - Electric current consumption : 90mA (max.)
     - IC board dimension : 1.22 x 1.40 inch