Abstract: A layout of a semiconductor memory device includes a substrate and a ternary content addressable memory (TCAM). The TCAM is disposed on the substrate and includes a plurality of TCAM bit cells, where at least two of the TCAM bit cells are mirror-symmetrical along an axis of symmetry, and each of the TCAM bit cells includes two storage units electrically connected to two word lines respectively, and a logic circuit electrically connected to the storage units. The logic circuit includes two first reading transistors, and two second reading transistors, where each of the second reading transistors includes a gate and source and drain regions, the source and drain regions of the second reading transistors are electrically connected to two matching lines and the first reading transistors, respectively, where the word lines are disposed parallel to and between the matching lines.

Abstract: A data transmission method includes: determining a sum of first service proportions and a sum of second service proportions according to a first transmission rate of at least one first device, a second transmission rate of at least one second device, and a maximum bandwidth of a host transmission interface; determining at least one first service proportion of the first device according to the sum of the first service proportions, and determining at least one second service proportion of the second device according to the sum of the second service proportions; and transmitting at least one package of first transmission data of the first device and at least one package of second transmission data of the second device to a host via the host transmission interface according to the first service proportion and the second service proportion.

Abstract: A mobile device includes a diversity antenna, a radio-frequency antenna, a first wireless communication circuit, a second wireless communication circuit and a first switching circuit. The second wireless communication circuit is electrically connected to the radio-frequency antenna. The first switching circuit is electrically connected to the diversity antenna, the first wireless communication circuit and the second wireless communication circuit. In a first mode, the diversity antenna is conducted to the first wireless communication circuit through the first switching circuit, and the first wireless communication circuit receives a wireless signal through the diversity antenna. In a second mode, the diversity antenna is conducted to the second wireless communication circuit through the first switching circuit, and the second wireless communication circuit executes a multi-input multi-output transmission through the diversity antenna and the radio-frequency antenna.

Abstract: A mobile device includes a diversity antenna, a radio-frequency antenna, a first wireless communication circuit, a second wireless communication circuit and a first switching circuit. The second wireless communication circuit is electrically connected to the radio-frequency antenna. The first switching circuit is electrically connected to the diversity antenna, the first wireless communication circuit and the second wireless communication circuit. In a first mode, the diversity antenna is conducted to the first wireless communication circuit through the first switching circuit, and the first wireless communication circuit receives a wireless signal through the diversity antenna. In a second mode, the diversity antenna is conducted to the second wireless communication circuit through the first switching circuit, and the second wireless communication circuit executes a multi-input multi-output transmission through the diversity antenna and the radio-frequency antenna.

Abstract: A catalyst for a fuel cell and a manufacturing method thereof are provided. The manufacturing method includes the following steps. A first mixture is mixed with a solvent to form a mixture solution, wherein the first mixture includes a nitrogen-containing precursor, a sulfur-containing precursor, a non-noble metal-containing precursor, and a carbon support. The solvent in the mixture solution is removed to form a second mixture. A thermal treatment is performed on the second mixture.

Abstract: A data transmission method includes: determining a sum of first service proportions and a sum of second service proportions according to a first transmission rate of at least one first device, a second transmission rate of at least one second device, and a maximum bandwidth of a host transmission interface; determining at least one first service proportion of the first device according to the sum of the first service proportions, and determining at least one second service proportion of the second device according to the sum of the second service proportions; and transmitting at least one package of first transmission data of the first device and at least one package of second transmission data of the second device to a host via the host transmission interface according to the first service proportion and the second service proportion.

Abstract: A method for data management adapted for a host controller to store device context data of a universal serial bus (USB) device is provided, and the host controller includes a memory. The method includes following steps: storing a device slot index table in the memory; allocating a plurality of memory blocks in the memory according to state information of the USB device when it is detected that the USB device is coupled to the host controller, so as to store the device context data of the USB device, and storing an initial address of the memory blocks in the device slot index table; and releasing the memory blocks and erasing the initial address of the memory blocks stored in the device slot index table when it is detected that the USB device is detached from the host controller.