Basics of computer architecture - Revision history

wikademia>Wikademia: Text replace - 'w:' to 'Wikipedia:'

2009-04-11T18:13:10Z

Text replace - 'w:' to 'Wikipedia:'

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	==Contents==		==Contents==
	''see also [[Computer Architecture Lab]]''		''see also [[Computer Architecture Lab]]''
	[[Image:ALU symbol.svg\|thumb\|200px\|A typical schematic symbol for an ALU: A & B are operands; R is the output; F is the input from the [[w:Control Unit\|Control Unit]]; D is an output status]]		[[Image:ALU symbol.svg\|thumb\|200px\|A typical schematic symbol for an ALU: A & B are operands; R is the output; F is the input from the [[Wikipedia:Control Unit\|Control Unit]]; D is an output status]]
	At the heart of any computer, modern or early, is a (usually) simple circuit called an ALU, or Arithmetic Logic Unit. It's comprised of a few simple operations which can be done very quickly. This, along with a small amount of memory running at processor speed called registers, make up what is known as the CPU, or Central Processing Unit.		At the heart of any computer, modern or early, is a (usually) simple circuit called an ALU, or Arithmetic Logic Unit. It's comprised of a few simple operations which can be done very quickly. This, along with a small amount of memory running at processor speed called registers, make up what is known as the CPU, or Central Processing Unit.

wikademia>Wikademia at 00:56, 11 April 2009

2009-04-11T00:56:10Z

← Older revision		Revision as of 00:56, 11 April 2009
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	Read the text and try to understand it. If something is not clear, follow the links for explanation.		Read the text and try to understand it. If something is not clear, follow the links for explanation.
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	==Contents==		==Contents==

wikademia>Wikademia: 25 revisions

2009-04-10T20:03:10Z

25 revisions

← Older revision	Revision as of 20:03, 10 April 2009
(No difference)

wikademia>Troublestarts: /* Contents */ punctuation correction

2009-02-08T22:09:01Z

Contents: punctuation correction

← Older revision		Revision as of 22:09, 8 February 2009
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	''see also [[Computer Architecture Lab]]''		''see also [[Computer Architecture Lab]]''
	[[Image:ALU symbol.svg\|thumb\|200px\|A typical schematic symbol for an ALU: A & B are operands; R is the output; F is the input from the [[w:Control Unit\|Control Unit]]; D is an output status]]		[[Image:ALU symbol.svg\|thumb\|200px\|A typical schematic symbol for an ALU: A & B are operands; R is the output; F is the input from the [[w:Control Unit\|Control Unit]]; D is an output status]]
	At the heart of any computer, modern or early, is a (usually) simple circuit called an ALU, or Arithmetic Logic Unit. ~~Its~~ comprised of a few simple operations which can be done very quickly. This, along with a small amount of memory running at processor speed called registers, make up what is known as the CPU, or Central Processing Unit.		At the heart of any computer, modern or early, is a (usually) simple circuit called an ALU, or Arithmetic Logic Unit. It's comprised of a few simple operations which can be done very quickly. This, along with a small amount of memory running at processor speed called registers, make up what is known as the CPU, or Central Processing Unit.

	A CPU isn't very useful unless there is some way to communicate to it, and receive information back from it. This is usually known as a Bus. The Bus is the input/output, or I/O gateway for the CPU. The primary area the CPU communicates with is system memory, commonly known as RAM, or Random Access Memory. Depending on the platform, the CPU may communicate with other parts of the system, or it may communicate just through memory.		A CPU isn't very useful unless there is some way to communicate to it, and receive information back from it. This is usually known as a Bus. The Bus is the input/output, or I/O gateway for the CPU. The primary area the CPU communicates with is system memory, commonly known as RAM, or Random Access Memory. Depending on the platform, the CPU may communicate with other parts of the system, or it may communicate just through memory.
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	==Questions for self-test==		==Questions for self-test==
	{{ABCD		{{ABCD

wikademia>Ren2k7 at 06:47, 5 January 2009

2009-01-05T06:47:25Z

← Older revision		Revision as of 06:47, 5 January 2009
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	*[[Personal computers\|Next Lesson]]		* [[Personal computers\|Next Lesson]]
	*[[History of computing\|Previous Lesson]]		* [[History of computing\|Previous Lesson]]
			* [[Introduction to Computer Science \| Course Home Page]]
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	[[Category:Basics]]		[[Category:Basics]]
	[[Category:Introduction to Computer Science]]		[[Category:Introduction to Computer Science]]

wikademia>Ren2k7 at 06:32, 5 January 2009

2009-01-05T06:32:26Z

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	[[Category:Basics]]		[[Category:Basics]]
	[[Category:Introduction to Computer Science]]		[[Category:Introduction to Computer Science]]
	~~[[Category:Introduction to Computer Architecture]]~~

wikademia>Ren2k7 at 05:15, 5 January 2009

2009-01-05T05:15:30Z

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	===Instructions for this lesson===		__NOTOC__
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			==Instructions for this lesson==
	Read the text and try to understand it. If something is not clear, follow the links for explanation.		Read the text and try to understand it. If something is not clear, follow the links for explanation.
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	===Contents===		{{RoundBoxTop\|theme=2}}
			==Contents==
	''see also [[Computer Architecture Lab]]''		''see also [[Computer Architecture Lab]]''
	[[Image:ALU symbol.svg\|thumb\|200px\|A typical schematic symbol for an ALU: A & B are operands; R is the output; F is the input from the [[w:Control Unit\|Control Unit]]; D is an output status]]		[[Image:ALU symbol.svg\|thumb\|200px\|A typical schematic symbol for an ALU: A & B are operands; R is the output; F is the input from the [[w:Control Unit\|Control Unit]]; D is an output status]]
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	[[Image:80186 arch.png\|thumb\|left\|350px]]		[[Image:80186 arch.png\|thumb\|left\|350px]]
	The "word" size of a platform is the native amount of bits that can be moved over the RAM<->CPU bus. Early computers varied on bit sizes, but most modern computers work in multiples of 8 bits, commonly known as a Byte. The first general purpose CPU on a chip, built by Intel, was the 8080 built in 1974. The 8080 used an 8 bit word, meaning it would communicate over the bus 1 byte at a time. In contrast, the 80386 has a 32 bit (4 byte) word, and the IA64 is a 64 bit (8 byte) word.		The "word" size of a platform is the native amount of bits that can be moved over the RAM<->CPU bus. Early computers varied on bit sizes, but most modern computers work in multiples of 8 bits, commonly known as a Byte. The first general purpose CPU on a chip, built by Intel, was the 8080 built in 1974. The 8080 used an 8 bit word, meaning it would communicate over the bus 1 byte at a time. In contrast, the 80386 has a 32 bit (4 byte) word, and the IA64 is a 64 bit (8 byte) word.
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			==Questions for self-test==











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	===Questions for self-test===
	{{ABCD		{{ABCD
	\| Question = What is the job of the ALU?		\| Question = What is the job of the ALU?
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	\| Dtext = Powering up the main systems.		\| Dtext = Powering up the main systems.
	\| Danswer = No. The ALU is a very simple processor.		\| Danswer = No. The ALU is a very simple processor.

	}}		}}
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	*[[Personal computers\|Next Lesson]]		*[[Personal computers\|Next Lesson]]
	*[[~~Introduction to Computer Science~~\|~~Back to Course Contents~~]]		*[[History of computing\|Previous Lesson]]
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	[[Category:Basics]]		[[Category:Basics]]
	[[Category:Introduction to Computer Science]]		[[Category:Introduction to Computer Science]]
	[[Category:Introduction to Computer Architecture]]		[[Category:Introduction to Computer Architecture]]

wikademia>Ren2k7 at 04:25, 5 January 2009

2009-01-05T04:25:27Z

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	}}		}}

	*[[Personal computers\|Next ~~lesson~~]]		*[[Personal computers\|Next Lesson]]
	*[[Introduction to Computer Science\|Back to ~~course contents~~]]		*[[Introduction to Computer Science\|Back to Course Contents]]

	[[Category:Basics]]		[[Category:Basics]]
	[[Category:Computer ~~science~~]]		[[Category:Introduction to Computer Science]]
	[[Category:Introduction to Computer Architecture]]		[[Category:Introduction to Computer Architecture]]

wikademia>Ren2k7 at 04:17, 5 January 2009

2009-01-05T04:17:11Z

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	*[[Introduction to Computer Science\|Back to course contents]]		*[[Introduction to Computer Science\|Back to course contents]]

			[[Category:Basics]]
	[[Category:Computer science]]		[[Category:Computer science]]
	[[Category:~~Basics]]~~		[[Category:Introduction to Computer Architecture]]
	~~[[Category:~~Computer ~~architecture~~]]

59.92.74.253: /* Instructions for this lesson */

2008-10-15T12:10:05Z

Instructions for this lesson

← Older revision		Revision as of 12:10, 15 October 2008
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	===Instructions for this lesson===		===Instructions for this lesson===
	Read the text and try to understand it. If something is not clear, follow the links for ~~exp~~.		Read the text and try to understand it. If something is not clear, follow the links for explanation.

	===Contents===		===Contents===