Abstract: An information processing system equipped with an information processing device, which includes multiple processors and a common parallel port (port), and a peripheral device, which includes a data classification means and multiple computing means. Each processor appends each processor identifier to a respective series of codes capable of expressing given data, thereby generating a writing unit capable of being written one time in the bus width of the port, and sequentially writes the writing unit to the port without performing exclusive control. A data classification means reads the writing units from the port sequentially and sequentially outputs the series of codes included in the writing unit to a computing means associated with the processor identifiers included in the writing unit. The computing means reconstructs the original data on the basis of the series of codes.

Abstract: An information processing system equipped with an information processing device, which includes multiple processors and a common parallel port (port), and a peripheral device, which includes a data classification means and multiple computing means. Each processor appends each processor identifier to a respective series of codes capable of expressing given data, thereby generating a writing unit capable of being written one time in the bus width of the port, and sequentially writes the writing unit to the port without performing exclusive control. A data classification means reads the writing units from the port sequentially and sequentially outputs the series of codes included in the writing unit to a computing means associated with the processor identifiers included in the writing unit. The computing means reconstructs the original data on the basis of the series of codes.

Abstract: A biological-body-attached data communication device has a communication unit communicating with an external device via a biological body as a medium, a data processing unit transmitting/receiving data with the external device via the communication unit, an attachment detection unit like a heartbeat sensor detecting whether or not the biological-body-attached data communication device is attached to the biological body, and a power source unit. When the attachment detection unit detects that the device is attached to the biological body, the power source unit supplies operational power to the communication unit and the data processing unit, and when the attachment detection unit detects that the device is not attached to the biological body, the power source units terminates or suppresses power supply to those units. Accordingly, power consumption is suppressed, and draining of the power source is prevented.