Abstract: An operation unit, and a floating-point number calculation method and apparatus are provided. The operation unit includes a disassembly circuit and an arithmetic unit. The disassembly circuit may obtain a mode and a to-be-calculated floating-point number that are included in a calculation instruction, and disassemble the to-be-calculated floating-point number according to a preset rule. Then, the arithmetic unit completes processing of the calculation instruction based on the mode and the disassembled to-be-calculated floating-point number.

Abstract: An arithmetic logic unit comprises multiple (N) adjustment circuits and a multiplier-accumulator. Each of the N adjustment circuits obtains an input floating-point number of a pre-selected input type, and converts the input number to one or more output floating-point numbers of an operation type and precision. The multiplier-accumulator is connected to the N adjustment circuits, and is configured to perform operations on input floating-point numbers of the operation type. The multiplier-accumulator receives a group of floating-point numbers of the operation type from the N adjustment circuits as inputs, performs an operation on the group of floating-point numbers, and generates an operation result floating-point number of the operation type. The multiplier-accumulator then converts the operation result floating-point number to an output floating-point number of a desired type different from the operation type.

Abstract: This application discloses a floating-point number multiplication computation method, an apparatus, and an arithmetic logic unit.

Abstract: A reverse-connection protecting device comprises an interface, a battery control module and an activation module. The interface includes first and second lead-in ends coupled to respective ones of first and second lead-out ends. The second lead-in end is couplable to a negative terminal of a backup battery. The second lead-out end is couplable to each negative terminal of a load and an external power supply. The battery control module is coupled to the first lead-in end of the interface and couplable to a positive terminal of the backup battery. The battery control module is configured to control the charging or discharging of the backup battery. The activation module is coupled to the battery control module, and couplable to the load and the external power supply.

Abstract: A reverse-connection protecting device comprises an interface, a battery control module and an activation module. The interface includes first and second lead-in ends coupled to respective ones of first and second lead-out ends. The second lead-in end is couplable to a negative terminal of a backup battery. The second lead-out end is couplable to each negative terminal of a load and an external power supply. The battery control module is coupled to the first lead-in end of the interface and couplable to a positive terminal of the backup battery. The battery control module is configured to control the charging or discharging of the backup battery. The activation module is coupled to the battery control module, and couplable to the load and the external power supply.