Magnetic-fluid display apparatus with pickup function

A magnetic-fluid display apparatus with a pickup function, comprising a display container, a number of electromagnetic elements that control change of a magnetic field according to electrical signals, pickup devices, and a circuit board, wherein the display container is provided with a magnetic fluid, the magnetic fluid is located within a range of the magnetic field generated by the electromagnetic elements, and the electromagnetic elements and the pickup devices are both electrically connected with the circuit board,

• wherein the circuit board is provided with a control circuit, the control circuit comprises:
• a processing module, a pickup module and an electromagnetic module, the pickup module and the electromagnetic module are electrically connected with the processing module respectively, the pickup module filters, shapes and amplifies the electrical signals converted by the pickup devices, and judges intensity and frequency of sound signals, the processing module outputs an electrical signal for controlling the electromagnetic module according to the electrical signals amplified by the pickup module, and the electromagnetic module controls the electromagnetic elements according to the electrical signal output by the processing module,
• wherein the pickup devices and the circuit board are both located inside he base and the display container is located outside the base, wherein the base comprises:
• a shell body and a cover body,
• wherein a rear end of the shell body is provided with an opening, the cover body comprises, a support and a back plate, the support is fixed to the back plate, the support is located outside the shell body, the electromagnetic elements are located on the support, and the back plate covers the opening in the rear end of the shell body;
• wherein the shell body is provided with a location groove, and the display container and the support are both located in the location groove.