Abstract: A computer unit includes computer components each having a processor and a computer component controller for controlling the operations of the computer components by communicating a control signal with the computer components through a radio transmission path. Another computer unit has a similar configuration. At an instruction from an external control terminal which has recognized the fault of another computer component controller provided for the another computer unit, the computer component controller concurrently controls the operations of computer components provided for the another computer unit by communicating a control signal through a radio transmission path.

Abstract: An information processing system includes a memory, a controller that reads data from a device coupled thereto and writes the data on the memory, a bridge that couples a system bus and an input output bus, the system bus being coupled to the memory and the processor, the input output bus being coupled to the controller, a check code generator that generates a check code from the data read from the device, and a determining unit that determines whether a second check code generated from the data read from the memory corresponds with the first check code.

Abstract: A computer unit includes computer components each having a processor and a computer component controller for controlling the operations of the computer components by communicating a control signal with the computer components through a radio transmission path. Another computer unit has a similar configuration. At an instruction from an external control terminal which has recognized the fault of another computer component controller provided for the another computer unit, the computer component controller concurrently controls the operations of computer components provided for the another computer unit by communicating a control signal through a radio transmission path.