Central Processing Unit - Revision history

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2023-11-05T11:14:33Z

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	The '''Central Processing Unit''', usually abbreviated as '''CPU''', or simply called a '''processor''', is the 'brain' of a computer - the unit which controls the operation of the entire computer, by reading [[instruction]]s from [[main memory]] and [[execute\|executing]] them.		The '''Central Processing Unit''', usually abbreviated as '''CPU''', or simply called a '''processor''', is the 'brain' of a computer - the unit which controls the operation of the entire computer, by reading [[instruction]]s from [[main memory]] and [[execute\|executing]] them.

	Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as ~~jumps~~, both [[conditional branch\|conditional]] and un-conditional).		Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as [[jump]]s, both [[conditional branch\|conditional]] and un-conditional).

	The CPU will contain an [[arithmetic logic unit\|ALU]], which is where any computation (arthmetical or logical) is performed. The CPU also usually contains a number of [[register]]s (storage for data inside the CPU, instead of in the main memory).		The CPU will contain an [[arithmetic logic unit\|ALU]], which is where any computation (arthmetical or logical) is performed. The CPU also usually contains a number of [[register]]s (storage for data inside the CPU, instead of in the main memory).

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	[[Category: ~~CPU~~ Basics]]		[[Category: Basics]]

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	[[Category: ~~Hardware~~ Basics]]		[[Category: CPU Basics]]

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	The '''Central Processing Unit''', usually abbreviated as '''CPU''', or simply called a '''processor''', is the 'brain' of a computer - the unit which controls the operation of the entire computer, by reading [[instruction]]s from [[main memory]] and executing them.		The '''Central Processing Unit''', usually abbreviated as '''CPU''', or simply called a '''processor''', is the 'brain' of a computer - the unit which controls the operation of the entire computer, by reading [[instruction]]s from [[main memory]] and [[execute\|executing]] them.

	Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as jumps, both [[conditional branch\|conditional]] and un-conditional).		Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as jumps, both [[conditional branch\|conditional]] and un-conditional).
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	The CPU will contain an [[arithmetic logic unit\|ALU]], which is where any computation (arthmetical or logical) is performed. The CPU also usually contains a number of [[register]]s (storage for data inside the CPU, instead of in the main memory).		The CPU will contain an [[arithmetic logic unit\|ALU]], which is where any computation (arthmetical or logical) is performed. The CPU also usually contains a number of [[register]]s (storage for data inside the CPU, instead of in the main memory).

	One special register, the [[Program Counter]], indicates where the current/next instruction is to be ~~fetched~~ from (although there were early computers which kept this information in a specific location in main memory). CPUs also typically include registers for holding data which is being worked on: early computers often had only one, called the 'accumulator'; and there have been computers without any such data registers.		One special register, the [[Program Counter]], indicates where the current/next instruction is to be [[fetch]]ed from (although there were early computers which kept this information in a specific location in main memory). CPUs also typically include registers for holding data which is being worked on: early computers often had only one, called the 'accumulator'; and there have been computers without any such data registers.

	Finally, CPUs usually contain means for controlling the ~~devices~~ attached to the computer; reading data from, and writing data to, them.		Finally, CPUs usually contain means for controlling the [[peripheral]]s attached to the computer; reading data from, and writing data to, them.

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

			[[Category: Hardware Basics]]

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	Finally, CPUs usually contain means for controlling the devices attached to the computer; reading data from, and writing data to, them.		Finally, CPUs usually contain means for controlling the devices attached to the computer; reading data from, and writing data to, them.

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	The '''Central Processing Unit''', usually abbreviated as '''CPU''', is the 'brain' of a computer - the unit which controls the operation of the entire computer, by reading ~~instructions~~ from [[main memory]] and executing them.		The '''Central Processing Unit''', usually abbreviated as '''CPU''', or simply called a '''processor''', is the 'brain' of a computer - the unit which controls the operation of the entire computer, by reading [[instruction]]s from [[main memory]] and executing them.

	Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as jumps, both conditional and un-conditional).		Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as jumps, both [[conditional branch\|conditional]] and un-conditional).

	The CPU will contain an [[~~Arithmetic~~ logic unit\|ALU]], which is where any computation (arthmetical or logical) is performed. The CPU also usually contains a number of ~~registers~~ (storage for data inside the CPU, instead of in the main memory).		The CPU will contain an [[arithmetic logic unit\|ALU]], which is where any computation (arthmetical or logical) is performed. The CPU also usually contains a number of [[register]]s (storage for data inside the CPU, instead of in the main memory).

	One special register indicates where the current/next instruction is to be fetched from (although there ~~have been~~ computers which kept this information in a specific location in main memory). CPUs also typically include registers for holding data which is being worked on: early computers often had only one, called the '''accumulator'''; and there have been computers without any such data registers.		One special register, the [[Program Counter]], indicates where the current/next instruction is to be fetched from (although there were early computers which kept this information in a specific location in main memory). CPUs also typically include registers for holding data which is being worked on: early computers often had only one, called the 'accumulator'; and there have been computers without any such data registers.

	Finally, CPUs usually contain means for controlling the devices attached to the computer; reading data from, and writing data to, them.		Finally, CPUs usually contain means for controlling the devices attached to the computer; reading data from, and writing data to, them.

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	Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as jumps, both conditional and un-conditional).		Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as jumps, both conditional and un-conditional).

	The CPU also usually contains a number of registers (storage for data inside the CPU, instead of in the main memory). One special register indicates where the current/next instruction is to be fetched from (although there have been computers which kept this information in a specific location in main memory). CPUs also typically include registers for holding data which is being worked on: early computers often had only one, called the accumulator; and there have been computers without any such data registers.		The CPU will contain an [[Arithmetic logic unit\|ALU]], which is where any computation (arthmetical or logical) is performed. The CPU also usually contains a number of registers (storage for data inside the CPU, instead of in the main memory).

			One special register indicates where the current/next instruction is to be fetched from (although there have been computers which kept this information in a specific location in main memory). CPUs also typically include registers for holding data which is being worked on: early computers often had only one, called the '''accumulator'''; and there have been computers without any such data registers.

	Finally, CPUs usually contain means for controlling the devices attached to the computer; reading data from, and writing data to, them.		Finally, CPUs usually contain means for controlling the devices attached to the computer; reading data from, and writing data to, them.

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2016-11-07T00:57:33Z

A start - fills a need

New page

The '''Central Processing Unit''', usually abbreviated as '''CPU''', is the 'brain' of a computer - the unit which controls the operation of the entire computer, by reading instructions from [[main memory]] and executing them.

Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as jumps, both conditional and un-conditional).

The CPU also usually contains a number of registers (storage for data inside the CPU, instead of in the main memory). One special register indicates where the current/next instruction is to be fetched from (although there have been computers which kept this information in a specific location in main memory). CPUs also typically include registers for holding data which is being worked on: early computers often had only one, called the accumulator; and there have been computers without any such data registers.

Finally, CPUs usually contain means for controlling the devices attached to the computer; reading data from, and writing data to, them.

{{stub}}

← Older revision		Revision as of 11:14, 5 November 2023
Line 1:		Line 1:
	The '''Central Processing Unit''', usually abbreviated as '''CPU''', or simply called a '''processor''', is the 'brain' of a computer - the unit which controls the operation of the entire computer, by reading [[instruction]]s from [[main memory]] and [[execute\|executing]] them.		The '''Central Processing Unit''', usually abbreviated as '''CPU''', or simply called a '''processor''', is the 'brain' of a computer - the unit which controls the operation of the entire computer, by reading [[instruction]]s from [[main memory]] and [[execute\|executing]] them.

	Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as ~~jumps~~, both [[conditional branch\|conditional]] and un-conditional).		Instructions include data-handling instructions (such as arithmetic and logical operations), and control instructions (such as [[jump]]s, both [[conditional branch\|conditional]] and un-conditional).

	The CPU will contain an [[arithmetic logic unit\|ALU]], which is where any computation (arthmetical or logical) is performed. The CPU also usually contains a number of [[register]]s (storage for data inside the CPU, instead of in the main memory).		The CPU will contain an [[arithmetic logic unit\|ALU]], which is where any computation (arthmetical or logical) is performed. The CPU also usually contains a number of [[register]]s (storage for data inside the CPU, instead of in the main memory).