| 摘要 |
PURPOSE: A manipulation circuit part of a washing machine is provided to simplify the circuit arrangement for scanning a key input part and a display part by an equal scan waveform of a microcomputer and preventing the erroneous key input due to the LED inverse voltage of the display part. CONSTITUTION: A manipulation circuit part of a washing machine includes a key input part(10) for inputting user's commands for operating the washing machine, a display part(20) for displaying operation items of the washing machine according to the input commands, a microcomputer part(30) for outputting a scan waveform to the key input part and the display part to recognize the operation situations of the display part and simultaneously controlling the whole operation of the washing machine according to the user's commands, and a transistor part(40) connected to the key input part and the display part for transmitting the scan waveform output from the microcomputer part thereto. |
