Abstract: A Central Processing Unit (CPU) frequency adjusting system has a multi-level architecture including an application level, a driver level, a hardware abstraction level, and a hardware platform. The application level includes a user interface (10) for generating a command signal to adjust a CPU frequency according to an input from a user, and displaying an adjusted CPU frequency. The hardware abstraction level includes a frequency adjusting module (130) for adjusting a current CPU frequency in a flash memory (14) with the new CPU frequency input by the user; and a data accessing module (131) for storing the adjusted CPU frequency in the flash memory, and reading the adjusted CPU frequency from the flash memory in order to display the adjusted CPU frequency on the user interface. The CPU frequency adjusting system can reduce the complexity of the hardware abstraction level, and is compatible with different types of BIOSs.

Abstract: A system for updating a sign-on logo image file in a computer includes: a storage medium (7) for storing image files; application software (1) for loading a selected image file, converting the selected image file into a designated format image file, and compressing the designated format image file into a corresponding sign-on logo image file; a dynamic link library (DLL) (2) for receiving the sign-on logo image file from the application software; a basic input/output system (BIOS) (4) for receiving the sign-on logo image file from the DLL through a driver model (3) which connects the DLL with the BIOS, determining whether the sign-on logo image file is valid according a size of the sign-on logo image file, and updating the sign-on logo image file in the computer if the sign-on logo image file is valid; and a read only memory (5) for storing the sign-on logo image file. A related method is also disclosed.

Abstract: A system for securing a computer is disclosed. The system includes a detecting module (101) for determining whether a portable storage device (20) connected to the computer (10) stores an key of the computer (10), a locking module (102) for locking the computer (10) if the portable storage device (20) does not store the key, and an unlocking module (103) for unlocking the computer (10) if the portable storage device (20) stores the key. A related method is also disclosed.

Abstract: A system for updating a sign-on logo image file in a computer includes: a storage medium (7) for storing image files; application software (1) for loading a selected image file, converting the selected image file into a designated format image file, and compressing the designated format image file into a corresponding sign-on logo image file; a dynamic link library (DLL) (2) for receiving the sign-on logo image file from the application software; a basic input/output system (BIOS) (4) for receiving the sign-on logo image file from the DLL through a driver model (3) which connects the DLL with the BIOS, determining whether the sign-on logo image file is valid according a size of the sign-on logo image file, and updating the sign-on logo image file in the computer if the sign-on logo image file is valid; and a read only memory (5) for storing the sign-on logo image file. A related method is also disclosed.

Abstract: A Central Processing Unit (CPU) frequency adjusting system has a multi-level architecture including an application level, a driver level, a hardware abstraction level, and a hardware platform. The application level includes a user interface (10) for generating a command signal to adjust a CPU frequency according to an input from a user, and displaying an adjusted CPU frequency. The hardware abstraction level includes a frequency adjusting module (130) for adjusting a current CPU frequency in a flash memory (14) with the new CPU frequency input by the user; and a data accessing module (131) for storing the adjusted CPU frequency in the flash memory, and reading the adjusted CPU frequency from the flash memory in order to display the adjusted CPU frequency on the user interface. The CPU frequency adjusting system can reduce the complexity of the hardware abstraction level, and is compatible with different types of BIOSs.

Abstract: Basic Input/Output System (BIOS) program updating system applies a multi-level architecture including an application level, a driver level, a hardware abstraction level, and a hardware platform. The application level includes a user interface (10) for receiving a binary file recording a new BIOS program from a user, and for generating a command signal for updating a current BIOS program after receiving the binary file. The hardware abstraction level includes a BIOS (13) for updating the current BIOS program stored in a flash memory (14) with the new BIOS program recoded in the binary file. The BIOS program updating system can reduce the complexity of the hardware abstraction level, and is compatible with different types of BIOSs. A related method is also provided.