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.

  • Cigna Uses AI to Check if Patients Are Taking...
    on December 13, 2019 at 2:22 pm

    Health insurer Cigna is expanding an AI-based system it acquired with its purchase of Express Scripts. Early results showed success in helping patients with chronic conditions, Cigna said.

  • Amazon Retrains More of Its Staff For Digital...
    on December 11, 2019 at 2:00 pm

    Amazon is in the midst of retraining a third of its U.S. workforce to prepare for new types of work. One of the challenges, management experts say, is determining the needs of an organization years in advance.

  • Using Computers To View The Unseen
    on December 10, 2019 at 5:17 pm

    A group of scientists from MIT CSAIL has  developed a method that can reconstruct hidden video from the subtle shadows and reflections on an observed pile of clutter.

  • Why Doctors, Fashion Designers Are Learning Data...
    on December 6, 2019 at 4:12 pm

    As technology becomes critical to careers and businesses, many outside the technology field are trying to pick up new-age digital skills.

  • Biomass Database Enables Better Wildfire and...
    on December 5, 2019 at 5:01 pm

    Researchers from the University of Washington and Michigan Technological University have created a comprehensive database of all the wildfire fuels that have been measured across North America. The database can help scientists make more informed decisions about fire and smoke situations.