The invention relates to computer science, in particular, to a computer system comprising a processor, an input-output switch, an instruction loading switch, instruction memory, and a data access unit which uses the dataflow principle of computation. Performance is increased by decreasing the volume of associative memory by means of the introduction of the use of a fragment routine processor to process segments of the program which are better processed by von Neumann principles of computation.
In a data driven information processor, an operation apparatus includes a data select unit and a flag select unit selecting information according to the value of flag data in an input data packet. The data select unit selects the processed result for each data in the input data packet or the data itself. The flag select unit selects the flag data set with a value according to the processed result or the flag data of the input data packet. The selected information is stored in the input data packet, which is output to a program storage unit. Accordingly, the processed result can be obtained for certain data selected out of a plurality of data in the data packet to be reflected in the subsequent operation process without dividing the data packets.
