ELECTRONIC DEVICE HAVING DISPLAYING FUNCTION

摘要

By using light-emitting diodes (11) capable of emitting light sufficiently even with a low voltage of a cell as a display unit for displaying various settings of a device, a display driver (9) packaged in an IC chip (10) is not required to have no booster circuit such as a DC-DC converter, so that output noise can be suppressed to exert no adverse effect on other function blocks (1 to 8) in the IC chip (10).