Magnetic tape - Revision history

Jnc: /* External links */ +Storage of Numbers on Magnetic Tape

2025-06-02T14:05:04Z

External links: +Storage of Numbers on Magnetic Tape

← Older revision		Revision as of 14:05, 2 June 2025
Line 18:		Line 18:

	* [http://www.quadibloc.com/comp/tapeint.htm Digital Magnetic Tape Recording] - good overview		* [http://www.quadibloc.com/comp/tapeint.htm Digital Magnetic Tape Recording] - good overview
			* [https://vipclubmn.org/Articles/DrumPrototypeDesign.pdf Storage of Numbers on Magnetic Tape]

	[[Category: Device Basics]]		[[Category: Device Basics]]
	[[Category: Magnetic Tape]]		[[Category: Magnetic Tape]]
	[[Category: Mass Storage]]		[[Category: Mass Storage]]

Jnc: /* External links */ +Digital Magnetic Tape Recording

2024-02-12T16:58:00Z

External links: +Digital Magnetic Tape Recording

← Older revision		Revision as of 16:58, 12 February 2024
Line 10:		Line 10:

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

			==See also==

			* [[DECtape]]

			==External links==

			* [http://www.quadibloc.com/comp/tapeint.htm Digital Magnetic Tape Recording] - good overview

	[[Category: Device Basics]]		[[Category: Device Basics]]
	[[Category: Magnetic Tape]]		[[Category: Magnetic Tape]]
	[[Category: Mass Storage]]		[[Category: Mass Storage]]

Jnc: +New cat

2023-05-03T14:20:13Z

+New cat

← Older revision		Revision as of 14:20, 3 May 2023
Line 1:		Line 1:
	'''Magnetic tape''' (as distinguished from [[paper tape]], another early popular [[secondary storage]] medium) has been a popular bulk ~~secondary~~ storage medium for computers from the earliest days.		'''Magnetic tape''' (as distinguished from [[paper tape]], another early popular [[secondary storage]] medium) has been a popular bulk [[mass storage]] medium for computers from the earliest days.

	Once [[disk]]s became cheap, it was relegated to use for [[backup]]s, but it remained popular in that use until recently. It has always had a very low cost per bit, since a reel of tape has much more surface area (and thus space for data) than any other physical form.		Once [[disk]]s became cheap, tape was relegated to use for [[backup]]s, but it remained popular in that use until recently. It has always had a very low cost per bit, since a reel of tape has much more surface area (and thus space for data) than any other physical form.

	It consists of a [[magnetic storage\|magnetic medium]] applied to flexible medium, usually plastic tape (although the [[UNIVAC I]] used thin metal tape), and wound on a reel. Mounted on a [[magnetic tape drive\|tape drive]], the tape is moved across a [[head]] onto a takeup reel, and data can be written to, and read from, the tape as it moves over the head.		It consists of a [[magnetic storage\|magnetic medium]] applied to flexible medium, usually plastic tape (although the [[UNIVAC I]] used thin metal tape), and wound on a reel. Mounted on a [[magnetic tape drive\|tape drive]], the tape is moved across a [[head]] onto a takeup reel, and data can be written to, and read from, the tape as it moves over the head.
Line 13:		Line 13:
	[[Category: Device Basics]]		[[Category: Device Basics]]
	[[Category: Magnetic Tape]]		[[Category: Magnetic Tape]]
			[[Category: Mass Storage]]

Jnc: New cat

2022-05-30T12:10:57Z

New cat

← Older revision		Revision as of 12:10, 30 May 2022
Line 5:		Line 5:
	It consists of a [[magnetic storage\|magnetic medium]] applied to flexible medium, usually plastic tape (although the [[UNIVAC I]] used thin metal tape), and wound on a reel. Mounted on a [[magnetic tape drive\|tape drive]], the tape is moved across a [[head]] onto a takeup reel, and data can be written to, and read from, the tape as it moves over the head.		It consists of a [[magnetic storage\|magnetic medium]] applied to flexible medium, usually plastic tape (although the [[UNIVAC I]] used thin metal tape), and wound on a reel. Mounted on a [[magnetic tape drive\|tape drive]], the tape is moved across a [[head]] onto a takeup reel, and data can be written to, and read from, the tape as it moves over the head.

	For many years the standard width was 1/2"; lengths were typically 1,200 feet and 2,400 feet, on a maxium reel size of 10-1/2". Originally data was stored in 7 parallel tracks (6 data, and 1 parity), but this was soon replaced with 9 tracks (8 data, and 1 parity). 7-track recording densities started at 200 bit per inch, increased to 556, and ended at 800. 9-track started at 800, and ~~increaed~~ to 1600 and 6250.		For many years the standard width was 1/2"; lengths were typically 1,200 feet and 2,400 feet, on a maxium reel size of 10-1/2". Originally data was stored in 7 parallel tracks (6 data, and 1 parity), but this was soon replaced with 9 tracks (8 data, and 1 parity). 7-track recording densities started at 200 bit per inch, increased to 556, and ended at 800. 9-track started at 800, and then increased to 1600 and 6250.

	More recently, open reels of tape started to be supplanted by various types of cartridges; over times, cartridges took over, and open reel tape is now more or less extinct.		More recently, open reels of tape started to be supplanted by various types of cartridges; over times, cartridges took over, and open reel tape is now more or less extinct.
Line 12:		Line 12:

	[[Category: Device Basics]]		[[Category: Device Basics]]
			[[Category: Magnetic Tape]]

Jnc: +cat

2018-12-13T14:43:22Z

+cat

← Older revision		Revision as of 14:43, 13 December 2018
Line 10:		Line 10:

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

			[[Category: Device Basics]]

Jnc: Proper cat

2018-10-20T00:03:53Z

Proper cat

← Older revision		Revision as of 00:03, 20 October 2018
Line 9:		Line 9:
	More recently, open reels of tape started to be supplanted by various types of cartridges; over times, cartridges took over, and open reel tape is now more or less extinct.		More recently, open reels of tape started to be supplanted by various types of cartridges; over times, cartridges took over, and open reel tape is now more or less extinct.

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

Jnc: Avoid redir

2018-05-31T01:35:41Z

Avoid redir

← Older revision		Revision as of 01:35, 31 May 2018
Line 3:		Line 3:
	Once [[disk]]s became cheap, it was relegated to use for [[backup]]s, but it remained popular in that use until recently. It has always had a very low cost per bit, since a reel of tape has much more surface area (and thus space for data) than any other physical form.		Once [[disk]]s became cheap, it was relegated to use for [[backup]]s, but it remained popular in that use until recently. It has always had a very low cost per bit, since a reel of tape has much more surface area (and thus space for data) than any other physical form.

	It consists of a [[magnetic storage\|magnetic medium]] applied to flexible medium, usually plastic tape (although the [[UNIVAC I]] used thin metal tape), and wound on a reel. Mounted on a [[tape drive]], the tape is moved across a [[head]] onto a takeup reel, and data can be written to, and read from, the tape as it moves over the head.		It consists of a [[magnetic storage\|magnetic medium]] applied to flexible medium, usually plastic tape (although the [[UNIVAC I]] used thin metal tape), and wound on a reel. Mounted on a [[magnetic tape drive\|tape drive]], the tape is moved across a [[head]] onto a takeup reel, and data can be written to, and read from, the tape as it moves over the head.

	For many years the standard width was 1/2"; lengths were typically 1,200 feet and 2,400 feet, on a maxium reel size of 10-1/2". Originally data was stored in 7 parallel tracks (6 data, and 1 parity), but this was soon replaced with 9 tracks (8 data, and 1 parity). 7-track recording densities started at 200 bit per inch, increased to 556, and ended at 800. 9-track started at 800, and increaed to 1600 and 6250.		For many years the standard width was 1/2"; lengths were typically 1,200 feet and 2,400 feet, on a maxium reel size of 10-1/2". Originally data was stored in 7 parallel tracks (6 data, and 1 parity), but this was soon replaced with 9 tracks (8 data, and 1 parity). 7-track recording densities started at 200 bit per inch, increased to 556, and ended at 800. 9-track started at 800, and increaed to 1600 and 6250.

Jnc: typos

2018-01-19T12:40:40Z

typos

← Older revision		Revision as of 12:40, 19 January 2018
Line 5:		Line 5:
	It consists of a [[magnetic storage\|magnetic medium]] applied to flexible medium, usually plastic tape (although the [[UNIVAC I]] used thin metal tape), and wound on a reel. Mounted on a [[tape drive]], the tape is moved across a [[head]] onto a takeup reel, and data can be written to, and read from, the tape as it moves over the head.		It consists of a [[magnetic storage\|magnetic medium]] applied to flexible medium, usually plastic tape (although the [[UNIVAC I]] used thin metal tape), and wound on a reel. Mounted on a [[tape drive]], the tape is moved across a [[head]] onto a takeup reel, and data can be written to, and read from, the tape as it moves over the head.

	For many years the standard width was 1/2"; ~~leengths~~ were typically 1,200 feet and 2,400 feet, on a maxium reel size of 10-1/2". Originally data was stored in 7 parallel tracks (6 data, and 1 parity), but this was soon replaced with 9 tracks (8 data, and 1 parity). 7-track recording densities started at 200 bit per inch, increased to 556, and ended at 800. 9-track started at 800, and increaed to 1600 and 6250.		For many years the standard width was 1/2"; lengths were typically 1,200 feet and 2,400 feet, on a maxium reel size of 10-1/2". Originally data was stored in 7 parallel tracks (6 data, and 1 parity), but this was soon replaced with 9 tracks (8 data, and 1 parity). 7-track recording densities started at 200 bit per inch, increased to 556, and ended at 800. 9-track started at 800, and increaed to 1600 and 6250.

	More recently, ~~oper~~ reels of tape started to be supplanted by various types of cartridges; over times, cartridges took over, and open reel tape is now more or less extinct.		More recently, open reels of tape started to be supplanted by various types of cartridges; over times, cartridges took over, and open reel tape is now more or less extinct.

	{{stub}}		{{stub}}

Jnc: An OK start

2017-10-08T20:11:37Z

An OK start

New page

'''Magnetic tape''' (as distinguished from [[paper tape]], another early popular [[secondary storage]] medium) has been a popular bulk secondary storage medium for computers from the earliest days.

Once [[disk]]s became cheap, it was relegated to use for [[backup]]s, but it remained popular in that use until recently. It has always had a very low cost per bit, since a reel of tape has much more surface area (and thus space for data) than any other physical form.

It consists of a [[magnetic storage|magnetic medium]] applied to flexible medium, usually plastic tape (although the [[UNIVAC I]] used thin metal tape), and wound on a reel. Mounted on a [[tape drive]], the tape is moved across a [[head]] onto a takeup reel, and data can be written to, and read from, the tape as it moves over the head.

For many years the standard width was 1/2"; leengths were typically 1,200 feet and 2,400 feet, on a maxium reel size of 10-1/2". Originally data was stored in 7 parallel tracks (6 data, and 1 parity), but this was soon replaced with 9 tracks (8 data, and 1 parity). 7-track recording densities started at 200 bit per inch, increased to 556, and ended at 800. 9-track started at 800, and increaed to 1600 and 6250.

More recently, oper reels of tape started to be supplanted by various types of cartridges; over times, cartridges took over, and open reel tape is now more or less extinct.

{{stub}}