Dynamic RAM - Revision history

Jnc: Explain why DRAM is such a low-power approach

2024-02-17T00:30:59Z

Explain why DRAM is such a low-power approach

← Older revision		Revision as of 00:30, 17 February 2024
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	'''Dynamic RAM''' ('dynamic random-access memory'), usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.		'''Dynamic RAM''' ('dynamic random-access memory'), usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers. Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. (It is actually a very old idea; the very first [[digital]] [[electronic]] [[computing device]], the [[Atanasoff-Berry Computer]], used a form of DRAM for its primary memory.)

	It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' [[bit]]. Over time, the charge dissipates as the electrons slowly leak away, so it must be [[memory refresh\|refreshed]] on a regular basis; typically in the low numbers of milliseconds.		It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' [[bit]]. Over time, the charge dissipates as the electrons slowly leak away, so it must be [[memory refresh\|refreshed]] on a regular basis; typically in the low numbers of milliseconds in contemporary DRAM.

			Alternative [[semiconductor]] memory approaches, such as [[static RAM\|SRAM]], use [[current]] flows to store information; the use of charge, stored in capacitors, allows DRAM to use a lot less power (which inevitably creates heat, which must be dealt with). DRAM only uses power when information is being read or written (which necessarily includes refresh operations).

	DRAM is also volatile; it loses its contents if power is cut off.		DRAM is also volatile; it loses its contents if power is cut off.

	Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first [[digital]] [[electronic]] [[computing device]], the [[Atanasoff-~~Berry Computer]], used a form of DRAM for its primary memory.~~		{{semi-stub}}

			==External links==

	~~{{semi~~-~~stub}}~~		* [https://www.nature.com/articles/s41928-018-0091-3 How we made DRAM] - wonderful essay from Robert H. Dennard, about how he had the idea which led to IBM's 1968 patent on single-transistor dynamic random access memory

	[[Category: Memory Basics]]		[[Category: Memory Basics]]

Jnc: ABC has several kinds of storage

2023-12-06T10:56:34Z

ABC has several kinds of storage

← Older revision		Revision as of 10:56, 6 December 2023
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	DRAM is also volatile; it loses its contents if power is cut off.		DRAM is also volatile; it loses its contents if power is cut off.

	Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first [[digital]] [[electronic]] computing device, the [[~~Atanasoff–Berry~~ Computer]], used a form of DRAM for its memory.		Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first [[digital]] [[electronic]] [[computing device]], the [[Atanasoff-Berry Computer]], used a form of DRAM for its primary memory.

	{{semi-stub}}		{{semi-stub}}

	[[Category: Memory Basics]]		[[Category: Memory Basics]]

Jnc: prepare for move

2022-09-20T00:05:09Z

prepare for move

← Older revision		Revision as of 00:05, 20 September 2022
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	'''Dynamic RAM''' ('dynamic random-access memory'), usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.		'''Dynamic RAM''' ('dynamic random-access memory'), usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.

	It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' [[bit]]. Over time, the charge dissipates as the electrons slowly leak away, so it must be [[refresh]]ed on a regular basis; typically in the low numbers of milliseconds.		It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' [[bit]]. Over time, the charge dissipates as the electrons slowly leak away, so it must be [[memory refresh\|refreshed]] on a regular basis; typically in the low numbers of milliseconds.

	DRAM is also volatile; it loses its contents if power is cut off.		DRAM is also volatile; it loses its contents if power is cut off.

Jnc: typo

2022-08-02T21:30:36Z

typo

← Older revision		Revision as of 21:30, 2 August 2022
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	'''Dynamic RAM''' ('dynamic random-access memory'). usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.		'''Dynamic RAM''' ('dynamic random-access memory'), usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.

	It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' [[bit]]. Over time, the charge dissipates as the electrons slowly leak away, so it must be [[refresh]]ed on a regular basis; typically in the low numbers of milliseconds.		It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' [[bit]]. Over time, the charge dissipates as the electrons slowly leak away, so it must be [[refresh]]ed on a regular basis; typically in the low numbers of milliseconds.

Jnc: +link

2018-12-13T14:34:12Z

+link

← Older revision		Revision as of 14:34, 13 December 2018
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	'''Dynamic RAM''' ('dynamic random-access memory'). usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.		'''Dynamic RAM''' ('dynamic random-access memory'). usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.

	It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' [[bit]]. Over time, the charge dissipates as the electrons slowly leak away, so it must be ~~'''refreshed'''~~ on a regular basis; typically in the low numbers of milliseconds.		It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' [[bit]]. Over time, the charge dissipates as the electrons slowly leak away, so it must be [[refresh]]ed on a regular basis; typically in the low numbers of milliseconds.

	DRAM is also volatile; it loses its contents if power is cut off.		DRAM is also volatile; it loses its contents if power is cut off.

Jnc: +cat

2018-12-13T14:30:44Z

+cat

← Older revision		Revision as of 14:30, 13 December 2018
Line 1:		Line 1:
	'''Dynamic RAM''' ('dynamic random-access memory'). usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.		'''Dynamic RAM''' ('dynamic random-access memory'). usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.

	It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' bit. Over time, the charge dissipates as the electrons slowly leak away, so it must be '''refreshed''' on a regular basis; typically in the low numbers of milliseconds.		It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' [[bit]]. Over time, the charge dissipates as the electrons slowly leak away, so it must be '''refreshed''' on a regular basis; typically in the low numbers of milliseconds.

	DRAM is also volatile; it loses it contents if power is cut off.		DRAM is also volatile; it loses its contents if power is cut off.

	Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first [[digital]] [[electronic]] computing device, the [[Atanasoff–Berry Computer]], used a form of DRAM for its memory.		Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first [[digital]] [[electronic]] computing device, the [[Atanasoff–Berry Computer]], used a form of DRAM for its memory.

	{{semi-stub}}		{{semi-stub}}

			[[Category: Memory Basics]]

Jnc: Correct cat

2018-10-18T15:00:35Z

Correct cat

← Older revision		Revision as of 15:00, 18 October 2018
Line 7:		Line 7:
	Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first [[digital]] [[electronic]] computing device, the [[Atanasoff–Berry Computer]], used a form of DRAM for its memory.		Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first [[digital]] [[electronic]] computing device, the [[Atanasoff–Berry Computer]], used a form of DRAM for its memory.

	{{stub}}		{{semi-stub}}

Jnc: Add some links, etc

2018-06-14T19:34:58Z

Add some links, etc

← Older revision		Revision as of 19:34, 14 June 2018
Line 1:		Line 1:
	'''Dynamic RAM''' ('dynamic random-access memory'). usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.		'''Dynamic RAM''' ('dynamic random-access memory'). usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.

	It consists of an array of small ~~capacitors~~; the presence, or absence, of a charge in a particular capacitor represents the storage of a '1' or '0' bit. Over time, the charge dissipates, so it must be '''refreshed''' on a regular basis; typically in the low numbers of milliseconds~~. DRAM is also volatile; it loses it contents if power is cut off~~.		It consists of an array of small [[capacitor]]s; the presence, or absence, of a charge (stored [[electron]]s) in a particular capacitor represents the storage of a '1' or '0' bit. Over time, the charge dissipates as the electrons slowly leak away, so it must be '''refreshed''' on a regular basis; typically in the low numbers of milliseconds.

	Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first digital electronic computing device, the [[Atanasoff–Berry Computer]], used a form of DRAM for its memory.		DRAM is also volatile; it loses it contents if power is cut off.

			Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first [[digital]] [[electronic]] computing device, the [[Atanasoff–Berry Computer]], used a form of DRAM for its memory.

	{{stub}}		{{stub}}

Jnc: not-so-stubby, but fills a nees

2016-11-07T00:36:09Z

not-so-stubby, but fills a nees

New page

'''Dynamic RAM''' ('dynamic random-access memory'). usually abbreviated as '''DRAM''', is currently the ubiquitous [[memory]] technology used for [[main memory]] in computers.

It consists of an array of small capacitors; the presence, or absence, of a charge in a particular capacitor represents the storage of a '1' or '0' bit. Over time, the charge dissipates, so it must be '''refreshed''' on a regular basis; typically in the low numbers of milliseconds. DRAM is also volatile; it loses it contents if power is cut off.

Contemporary DRAM is implemented in [[integrated circuit]]s, but very early DRAM implementations used discrete components. The very first digital electronic computing device, the [[Atanasoff–Berry Computer]], used a form of DRAM for its memory.

{{stub}}