Memory

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General

Dictionary

memory : a device (as a chip) or a component of a device in which information especially for a computer can be inserted and stored and from which it may be extracted when wanted — Webster

FOLDOC: Free Online Dictionary of Computing, OneLook

Glossary

Glossary of Computer and Internet Terms (PC.net)

Encyclopedia

Memory refers to the computer hardware devices used to store information for immediate use in a computer; it is synonymous with the term “primary storage”. Computer memory operates at a high speed, for example random-access memory (RAM), as a distinction from storage that provides slow-to-access program and data storage but offers higher capacities. If needed, contents of the computer memory can be transferred to secondary storage, through a memory management technique called “virtual memory”. An archaic synonym for memory is store.

The term “memory”, meaning “primary storage” or “main memory”, is often associated with addressable semiconductor memory, i.e. integrated circuits consisting of silicon-based transistors, used for example as primary storage but also other purposes in computers and other digital electronic devices. There are two main kinds of semiconductor memory, volatile and non-volatile. Examples of non-volatile memory are flash memory (used as secondary memory) and ROM, PROM, EPROM and EEPROM memory (used for storing firmware such as BIOS). Examples of volatile memory are primary storage, which is typically dynamic random-access memory (DRAM), and fast CPU cache memory, which is typically static random-access memory (SRAM) that is fast but energy-consuming, offering lower memory areal density than DRAM.

Most semiconductor memory is organized into memory cells or bistable flip-flops, each storing one bit (0 or 1). Flash memory organization includes both one bit per memory cell and multiple bits per cell (called MLC, Multiple Level Cell). The memory cells are grouped into words of fixed word length, for example 1, 2, 4, 8, 16, 32, 64 or 128 bit. Each word can be accessed by a binary address of N bit, making it possible to store 2 raised by N words in the memory. This implies that processor registers normally are not considered as memory, since they only store one word and do not include an addressing mechanism.

Typical secondary storage devices are hard disk drives and solid-state drives. — Wikipedia

Encyclopædia Britannica

Introduction

Computer Memory (HowStuffWorks)

Technology



Memory Upgrade, How to.. (Computer Memory Upgrade)
Computer Memory Upgrade.net (Computer Memory Upgrade)

Preservation

History




Timeline of Computer History: Memory and Storage (Computer History Museum)
Data Formats Timeline (Jason Curtis, Museum Of Obsolete Media)

Library

WorldCat, Library of Congress, UPenn Online Books, Open Library

Participation

Education

Course

OER Commons: Open Educational Resources

News

ACM Data Storage & Retrieval, IEEE Spectrum

Book

ISBNdb

Government

Document

USA.gov

Expression

Fun


Poem

OEDILF: The Omnificent English Dictionary In Limerick Form

Future





A kilobyte rewritable atomic memory (Nature Nanotechnology)
Nanoscale Memory (Franz Himpsel, U. Wisconsin)

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Communications of the ACM: Data / Storage And Retrieval The latest news, opinion and research in data / storage and retrieval, from Communications online.

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    on November 7, 2019 at 4:39 pm

    Roboticists are creating a data set of annotated video clips called RoboNet that could be used to train a robot's neural network to perform new tasks.

  • Information Is Physics
    on November 1, 2019 at 4:00 am

    Individual bits of information can have direct physical consequences.

  • Privacy Concerns with Aadhaar
    on November 1, 2019 at 4:00 am

    The debate engendered by the Aadhaar project has propelled India from being a predominantly pre-privacy society to one in which privacy protection in digital databases has emerged as a major national concern.