Central Processing Unit - Revision history

Jnc: +link

2023-11-05T11:14:33Z

+link

Jnc: better cat

2021-09-11T11:09:58Z

better cat

Jnc: divide cat

2018-12-15T14:08:24Z

divide cat

Jnc: +cat, +links

2018-12-13T02:49:43Z

+cat, +links

Jnc: Proper cat

2018-10-18T14:38:07Z

Proper cat

Jnc: Add some links

2018-03-15T08:39:07Z

Add some links

Jnc: Add ALU

2017-08-19T13:51:19Z

Add ALU

Jnc: A start - fills a need

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}}

@@ 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.
-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).

← Older revision		Revision as of 11:09, 11 September 2021
Line 11:		Line 11:
	{{semi-stub}}		{{semi-stub}}

−	[[Category: ~~CPU~~ Basics]]	+	[[Category: Basics]]

← Older revision		Revision as of 14:08, 15 December 2018
Line 11:		Line 11:
	{{semi-stub}}		{{semi-stub}}

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

@@ 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 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).
@@ Line 5: / Line 5: @@
 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}}

← Older revision		Revision as of 14:38, 18 October 2018
Line 9:		Line 9:
	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.

−	{{stub}}	+	{{semi-stub}}

@@ Line 3: / Line 3: @@
 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).
 Finally, CPUs usually contain means for controlling the devices attached to the computer; reading data from, and writing data to, them.
 {{stub}}