Address - Revision history

Jnc: +cat

2018-12-14T17:44:39Z

+cat

← Older revision		Revision as of 17:44, 14 December 2018
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	Networking also has addresses (which usually include some information about ''where'' in the network the named thing is, they do not just uniquely identify the entity). In some [[protocol suite]]s, [[interface]]s are given addresses, in others, it is [[host]]s which have them.		Networking also has addresses (which usually include some information about ''where'' in the network the named thing is, they do not just uniquely identify the entity). In some [[protocol suite]]s, [[interface]]s are given addresses, in others, it is [[host]]s which have them.

			[[Category: Basics]]

Jnc: Link term

2018-05-12T21:19:16Z

Link term

← Older revision		Revision as of 21:19, 12 May 2018
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	* a unit of storage, either [[main memory]] or [[secondary storage]]; or		* a unit of storage, either [[main memory]] or [[secondary storage]]; or
	* something in a network.		* something in a [[communication network]].

	==Storage==		==Storage==

Jnc: A good start

2018-05-12T19:19:18Z

A good start

New page

An '''address''' is a name (in the general sense of an [[identifier]]) for either:

* a unit of storage, either [[main memory]] or [[secondary storage]]; or
* something in a network.

==Storage==

For the former, the [[hardware]] reacts to references to a given address by using the unit of storage at that address.

For main memory, an address uniquely names the fundamental unit of memory - a [[byte]] in most contemporary machines (following the example of the [[IBM System/360]], or a [[word]] (typical, on older machines). Main memory cells are arranged in an [[array]], and the address is the index into that array.

Addresses for secondary storage can be more complicated; for [[disk]]s, disk addresses (particularly on older disks) include separate cylinder, surface and sector fields. For [[magnetic tape]] drives, records or blocks are usually numbered sequentially.

==Networks==

Networking also has addresses (which usually include some information about ''where'' in the network the named thing is, they do not just uniquely identify the entity). In some [[protocol suite]]s, [[interface]]s are given addresses, in others, it is [[host]]s which have them.