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:
Feb. 26, 1980
Filed:
Apr. 01, 1977
Ashok H Someshwar, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A Read-Only-Memory (ROM) is addressed with a binary coded decimal (BCD) address in an address register or program counter. The ROM comprises an array of memory cells with associated row and column lines for addressing the array. Row and column decoders responsive to the address in the address register identify a unique row and column line for each BCD address. The row and column decoders comprise a plurality of decoders in cascaded levels. The decorders in any given level decode particular bits of the address in the address register; these decoders decode a one-out-of-a-prime-number, which prime number is a factor of the number of memory locations in the array.