摘要:
A display apparatus and a method for controlling the function of a display apparatus are disclosed. The display apparatus comprises a first memory, a second memory, a color module, and a switch. The first memory stores the first setting data. The second memory stores the second setting data. The color module is installed with one of the first color unit and the second color unit alternatively. The switch chooses either the first memory or the second memory according to the color unit that has been installed in the color module. The display apparatus functions in response to the setting data stored in the chosen memory.
摘要:
A surge protection and reset circuit is provided for resetting a microprocessor to maintain a discharge lamp under a normal operating condition when the microprocessor is crashed owing to the cross talk or radiation effect in igniting a discharge lamp. The surge protection and reset circuit includes a ballast electrically connected to the discharge lamp for igniting the discharge lamp, a starting control circuit electrically connected to the ballast for triggering the ballast to ignite the discharge lamp and powering the ballast, a microprocessor electrically connected to the starting control circuit for initializing the starting control circuit when the microprocessor receives a lamp-state signal and a reset signal, and a reset circuit having an output terminal electrically connected to the microprocessor for providing the reset signal to reset the microprocessor when the reset circuit receives the lamp-state signal from a lamp-state terminal of the ballast.
摘要:
An apparatus and method for controlling a rotation speed of a fan. A comparator is used to detect an analog signal driving the fan. When the analog signal is detected abnormal, a voltage generation circuit generates a particular voltage to maintain a lowest operation voltage of the fan. A protection circuit is provided to let the fan driven by the analog signal again by means of receiving a signal from a system the fan is disposed at when the analog signal becomes normal.