PURPOSE: To improve the throughput of a computer having no use for providing software for processing data for different computers by furnishing with a section for controlling instructions that brings up to date the information of locations in the address section or read and bring to up to date the information of locations in the data storage section.

CONSTITUTION: First, in a data storage section 10, each data making a sequence of data and a sequence of data containing the information of locations of the data adjoining the said each data are stored. Secondly, in an address storage section 102, the information of locations of the specified sequence in the storage section 101 has been stored which enables to read and write by assigning an address. Then, in a section for controlling instructions 103, as inputs, an instruction 104, a selector 105 that assigns an address corresponding to the storage section 102 and a data 106 are stored and a data 107 is output from it as an output. Under this constitution, bringing up to date of the information of locations in the control section 103 or read and bringing up to date of the information of locations in the data section 101 that use the information of locations in the storage section 102 are carried out corresponding to an input and thereby the load on the program is reduced and the throughput of a computer is improved.