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10 Facts About Random-Access Memory

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Random-access memory is a form of computer data storage which stores frequently used program instructions to increase the general speed of a system.

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data.

Data is a set of values of qualitative or quantitative variables.

What is Random Access Memory (RAM) by TheCuriousEngineer

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A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory.

What is RAM? (Random Access Memory) - Computer Basics by TheTechSlugs

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In contrast, with other direct-access data storage media such as hard disks, CD-RWs, DVD-RWs and the older drum memory, the time required to read and write data items varies significantly depending on their physical locations on the recording medium, due to mechanical limitations such as media rotation speeds and arm movement.

A hard disk drive, hard disk, hard drive or fixed disk is a data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks coated with magnetic material.

Drum memory was a magnetic data storage device invented by Gustav Tauschek in 1932 in Austria.

DVD recordable and DVD rewritable refer to part of optical disc recording technologies.

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RAM contains multiplexing and demultiplexing circuitry, to connect the data lines to the addressed storage for reading or writing the entry.

In telecommunications and computer networks, multiplexing is a method by which multiple analog or digital signals are combined into one signal over a shared medium.

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Usually more than one bit of storage is accessed by the same address, and RAM devices often have multiple data lines and are said to be '8-bit' or '16-bit' etc. devices.

The bit is a basic unit of information in computing and digital communications.

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In today's technology, random-access memory takes the form of integrated circuits.

An integrated circuit or monolithic integrated circuit is a set of electronic circuits on one small flat piece of semiconductor material, normally silicon.

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RAM is normally associated with volatile types of memory, where stored information is lost if power is removed, although non-volatile RAM has also been developed.

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Other types of non-volatile memories exist that allow random access for read operations, but either do not allow write operations or have other kinds of limitations on them.

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These include most types of ROM and a type of flash memory called NOR-Flash.

Flash memory is an electronic non-volatile computer storage medium that can be electrically erased and reprogrammed.

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Integrated-circuit RAM chips came into the market in the early 1970s, with the first commercially available DRAM chip, the Intel 1103, introduced in October 1970.

Dynamic random-access memory is a type of random-access memory that stores each bit of data in a separate capacitor within an integrated circuit.

The 1103 is a dynamic random-access memory integrated circuit developed and fabricated by Intel.

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