sharp mz 40k from 1978

Z-40K of the Sharp MZ computers series was a single-board microcomputer in a plastic covered box with a built-in speaker and could play music automatically or become an organ played with the monitor keys.

4-bit CPU MB8843, is clocked at circa 1.8 MHz and contains internal ROM of 1K x 8 bit.

i think it is good for nothing..... but therefore in good condition
still in original packaging, never put together