Random access memory device

Details Random access memory device Random access memory device

1982-09-28

1985-06-04

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Serial read/write

G11C 1300

Patent

active

045218749

ABSTRACT:
A memory circuit in which data words are held in a continuous sequence of locations, a new data word being insertable at a selected address, and a stored data word being readable from a selected address. On data word insertion, the selected location is first vacated by shifting data already stored above or below the selected address by one location. For example, all the data in locations having addresses equal to or greater than the selected address are shifted. Data read from the circuit may be optionally purged from the device and remaining data words are then shifted to fill the location vacated by the purged data. By appropriate selection of the various modes of operation, the memory circuit may be made to operate as a first-in-first-out memory, a last-in-first-out memory, or as a conventional random access memory. The circuit is well suited for use in a computer of the horizontal type, in which the use of computing resources has to be optimally scheduled, and data flowing between the resources has to be subjected to scheduled time delays.

REFERENCES:
patent: 4365318 (1982-12-01), Aichelmann, Jr. et al.
patent: 4394753 (1983-07-01), Penzel
patent: 4426688 (1984-01-01), Moxley

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