Abstract: A method for automatically switching power states is disclosed. According to the method, when an electronic apparatus is in a power-saving state and a waking up time is reached, the electronic apparatus is switched into a working state, and when an executing time is reached, the electronic apparatus automatically executes an assigned function. After completing the assigned function, the electronic apparatus is switched back into the power-saving state for energy-saving purpose.

Abstract: A method for playing an E-mail is provided. The E-mail is read in from a mail transmitting and receiving apparatus, and the E-mail includes a number of mail information fields. Further, an assigned filed data is checked, and at least one of the mail information fields is recorded in the assigned filed data. Moreover, according to the mail information field recorded in the assigned filed data, a mail message is extracted from a corresponding mail information field of the E-mail. In addition, the mail message is stored in a text temporary file. Further, the text temporary file is transformed into an audio data file for playing.

Abstract: A method and system for sensing identity-distinguishable applied to a computer are provided. The computer includes a detecting unit and a logging-in/out unit. The detecting unit is used for detecting an identifying chip having an identifying data. The logging-in/out unit is used for logging in the computer system by a personal identification data matching with the identifying data. The identity-distinguishable sensing method includes the following steps. Firstly, the identifying chip is detected. Next, the computer is logged in by the personal identification data matching with the identifying data.

Abstract: A method for operating a heat dissipation system is described as follows. Starting a first active heat dissipation device to dissipate heat of a heat source. After the first active heat dissipation device operates for a first predetermined period of time, starting the second active heat dissipation device to dissipate the heat of the heat source. Stopping operation of the first active heat dissipation device.

Abstract: A method for automatically switching power states is disclosed. According to the method, when an electronic apparatus is in a power-saving state and a waking up time is reached, the electronic apparatus is switched into a working state, and when an executing time is reached, the electronic apparatus automatically executes an assigned function. After completing the assigned function, the electronic apparatus is switched back into the power-saving state for energy-saving purpose.