Abstract: A data transmission method stores target data from an initial storage area of an initial platform to an initial temporary storage area of the initial platform in response to a first user operation. The target data is uploaded to a cloud platform. The cloud platform stores the target data. A target platform downloads the target data from the cloud platform to a second designated location of the target platform in response to a second user operation. The initial platform stores the target data from the initial temporary storage area to a third designated location of the initial platform in response to a third user operation. The method improves the efficiency of data transmission between different platforms.

Abstract: A portable and simple input device for document display purposes which can operate with the powers and functions of a full computer includes a cover, keys for user input, a circuit board, a storage unit, a first communication unit, and a processor. The keys are outside the cover, the circuit board, the processor, and the storage unit are within the cover. The storage unit stores a computer operating system and a preset document. The first communication unit enables communication between the input device and an external display device. The processor can generate a starting signal when a first preset condition is met, execute the computer operating system and the preset document in the computer operating system according to the starting signal, transmit the executed preset document to the external display device for display, and control the display characteristics of the preset document.

Abstract: A diaphragm pump includes a motor, an eccentric member driven by the motor, and a diaphragm. The motor includes an output shaft connected with the eccentric member. The eccentric member includes multiple arms which move up and down due to the rotation of the output shaft. The diaphragm has multiple bladders. Each bladder forms a pump chamber. The bladders are connected with the arms such that the bladders are compressed or expanded due to the movement of the arms. The pump has an air exhaust chamber and an air inlet chamber. The air inlet chamber is connected to the pump chambers via a passage. The passage includes a cavity which overlaps the air exhaust chamber in an axial direction of the motor.

Abstract: A diaphragm pump includes a motor, an eccentric member driven by the motor, and a diaphragm. The motor includes an output shaft connected with the eccentric member. The eccentric member includes multiple arms which move up and down due to the rotation of the output shaft. The diaphragm has multiple bladders. Each bladder forms a pump chamber. The bladders are connected with the arms such that the bladders are compressed or expanded due to the movement of the arms. The pump has an air exhaust chamber and an air inlet chamber. The air inlet chamber is connected to the pump chambers via a passage. The passage includes a cavity which overlaps the air exhaust chamber in an axial direction of the motor.