Counting RAM

Details Counting RAM Counting RAM

1987-04-14

1989-06-06

Popek, Joseph A.

Static information storage and retrieval

Addressing

Counting

377 51, 365 78, G11C 800

Patent

active

048377481

ABSTRACT:
An integrated circuit memory with additional circuitry added so that the integrated circuit acts as a counting memory is disclosed. A memory core is included with associated circuitry allowing it to be accessed in the same manner as ordinary random access memory (RAM). A counter is included and is coupled so that it can receive the contents of any location in the memory core. Each address in the memory acts as an individual counter. When a particular memory address is presented indicating that the count at that memory location should be incremented, the contents of that memory location are transferred to the counter, the counter is incremented, and the contents of the counter are then transferred back to the memory location. This process is repeated each time a new address is presented indicating a new event to be recorded. At the end of a series of events, the core memory will contain, at each corresponding memory location, the number of occurrences of the event assigned to that address.

REFERENCES:
patent: 3832640 (1974-08-01), Cederquist et al.
patent: 4393482 (1983-07-01), Yamada

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