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

Jnc: ABC has several kinds of storage

2023-12-06T10:56:34Z

ABC has several kinds of storage

Jnc: prepare for move

2022-09-20T00:05:09Z

prepare for move

Jnc: typo

2022-08-02T21:30:36Z

typo

Jnc: +link

2018-12-13T14:34:12Z

+link

Jnc: +cat

2018-12-13T14:30:44Z

+cat

Jnc: Correct cat

2018-10-18T15:00:35Z

Correct cat

Jnc: Add some links, etc

2018-06-14T19:34:58Z

Add some links, etc

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.

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@@ 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. 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.
 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.
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-{{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]]

@@ Line 5: / Line 5: @@
 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}}
 [[Category: Memory Basics]]

@@ 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.
-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.

← Older revision		Revision as of 21:30, 2 August 2022
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 [[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.

@@ 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.
-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.

← Older revision		Revision as of 15:00, 18 October 2018
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	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.

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@@ 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.
-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.
 {{stub}}