The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 1980
Filed:
Apr. 14, 1977
Toshitaka Tsuda, Kawasaki, JP;
Fujitsu Limited, , JP;
Abstract
A data processing system for reading or writing data comprises a data memory unit and a processing unit, the data to be read from or written to the data memory unit is being serially transferred bit by bit over a single line connected between the data memory unit and the processing unit. The processing unit is operated in accordance with an instruction specified by instruction addressing information which is produced by an instruction counter. The data is specified by data addressing information which is produced by a means for specifying the address of the data memory unit. Both the lower bits of the data addressing information and the lower bits of the instruction addressing information are jointly produced by the lower bit stages of the instruction counter. The upper bits of the data addressing information are momentarily stored in an upper bits specifying register during one read or write operation while one execution of one data bit data is performed. Further, the data addressing information is provided synchronously with the provision of the instruction addressinginformation. The number of bits of the data word must be equal to or must be a multiple of the number of bits of the instruction word, or the number of bits of the instruction word must be a multiple of the number of bits of the data word.