The Central Processing Unit Essay

1702 words - 7 pages

The Central Processing Unit The CPU (Central Processing Unit) is the processor within the

It is a microchip which carries out all of the searching, sorting,
selecting and calculating within the computer.

The CPU also has an internal clock which determines the maximum speed
at which everything within the computer is done.

CPUs run at different speeds measured in MHz.
The Intel Pentium 4 shown above runs at a maximum of 2.2GHz.

The most common CPUs in PCs are Celeron Processors and Pentium
Processors both made by Intel.

The CPU is plugged into the motherboard enabling it fast access to all
devices especially ROM and RAM chips.

Main Processing Unit Devices - Motherboard

The Motherboard is the heart of the computer, into which everything

When you buy a computer it usually has a Motherboard which already has
a CPU, RAM, ROM, Ports and Connecting leads. The Hard Disk Drive and
Floppy Disk Drive are connected directly to the Motherboard.

Usually there are also a number of spare slots to attach additional
devices such as RAM, Sound Cards etc.
These spaces are known as expansion slots.

An advantage of Motherboards is that they make it easier to upgrade an
existing computer rather than buying a whole new PC.

Main Processing Unit Devices - Ports

A port is a point at which you can attach leads from devices to the
Main Processing Unit.

Ports can be at the front or the back of a computer.
The ones in the picture are hidden by a flap at the front of the PC.

Ports are of different types and are of different shapes and sizes

A few examples are:

PS/2 Port

Common small round connector for a keyboard or mouse

Serial Port

A common small D shaped connector for serial devices
(some mice and keyboards connect in this way)

Parallel Port

A longer but thin D shaped connector for parallel devices often used
for connecting a printer

USB Port

A small socket usually labelled USB. A fast new alternative way to
connect to modern devices, such as USB Scanners, USB Joysticks, USB
Modems etc.

Main Processing Unit Devices - Modem

Modems can be External (connected by a lead to a Port) or Internal
(fixed to a slot on the Motherboard)

A modem allows a computer to send and receive data through a telephone

Modems transmit data at different speeds known as Baud Rate.
Speed is measured in Bits per Second or bps.

It is common for modems in the home to transmit and receive data at 56

External modems are becoming less common because most new computers
come with an internal modem already fitted to the Motherboard.

Modems are a common way to connect to the Internet.
Other methods include Cable and ISDN,...

Find Another Essay On The Central Processing Unit

Central Processing Unit Essay

1392 words - 6 pages 1971. The CPU (Central Processing Unit, also known as the microprocessor) is a very complex part of computers that has many complicated parts, a compound evolution, and different architectures for every deveice (Davis). Arithmetic unit, logic unit, and registers make up the complicated CPU (Garza). The arithmetic unit is the digital circuit that performs integer arithmetic (things to do with numbers and math) and logical operations (Wikipedia

The Computer Brain Essay

2436 words - 10 pages computer works. In the book, Is This Thing On, there is a comparison of the central processing unit, or CPU: "The CPU is to information on the computer what the post office is to a letter" (Stokes 15). There is also a comparison to a car, regarding the speed of the car in horsepower to the speed of the central processing unit in gigahertz (15). The faster the speed of the central processing unit in your computer, the faster the information is

Computer Operations Paper

1003 words - 4 pages IntroductionComputers are an electronic device used for data processing, store and produce an output to the user. Based on the functionalities of the computer, the hardware components can be classified into four main units. Input Unit, Output Unit, Central Processing Unit, Memory Unit. These units are interconnected by minute electrical wires to permit communication between them. This allows the computer to function as a system.Input UnitA

Business Information Systems, Data handling.

4055 words - 16 pages Unit 3 Business Information SystemsAssignment No.3- Data handling.Q1) Give an example of a data processing application.i. Describe the data processing cycle as it applies to your example.ii. Name the most appropriate processing method for your example and briefly explain why you have chosen this method.An example of a data processing application is a sale made process.The cycle would be as follows:1. The Sales department receive a request for a

Constant Coefficients Linear Prediction for Lossless Compression of Ultraspectral Sounder Data using a Graphics Processing Unit

594 words - 2 pages ultraspectral sounder data having an average compression ratio of 3.39 on publicly available NASA AIRS data. CUDA is a parallel programming architecture that is designed for data-parallel computation. CUDA does not require the programmers to explicitly manage threads. This simplifies the programming model. Our GPU implementation on Nvidia 9600 GT is experimentally compared to the native Central Processing Unit (CPU) implementation. We achieved a speed-up

Handheld Mobile Devices

3813 words - 15 pages do so. A dual process theory was proposed by Petty and Cacioppo (1981), the Elaboration Likelihood Model in which, attitude change can occur via two processes. The Elaboration Likelihood Model postulates two processing routes of persuasion, the Central Route, and the Peripheral Route. The former refers to more careful thought utilising more cognitive resources, while the latter, less motivated, less careful and fewer cognitive resources

my first day at classroom

2012 words - 8 pages Unit (CU) § Arithmetic Logic Unit (ALU) § No other single component of a computer determines its overall performance as much as the CPU Central Processing Unit (CPU)Central Processing Unit (CPU) 101 Computer Fundamentals: Pradeep K. Sinha & Priti SinhaComputer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 5/27Chapter 7: Processor and MemoryRef Page § One of the two basic components of CPU § Acts as the central

The Components of a Computer and Information Processing System

975 words - 4 pages stored. The brain of the computer is the CPU, or central processing unit. It is used to process all the functions the computer performs. RAM is where data is temporarily stored and accessed and is attached to the motherboard. The motherboard is the most important component; it connects all the other hardware in a computer system. A power supply sends the other hardware power so that they can run. Hard drives are used for permanent file storage. A

Background Material

1243 words - 5 pages kilobytesKilobyte=1024 bytesGigabyte=1024 byte________________________________________1.4 Computer ArchitectureWords: a unit of 32 or 64 bits, the basic unit the computer manipulates when performing an action.Components of a Computer:1. Microprocessor:A microprocessor combines: ALU Control UnitIt was known in mainframe computers as:CPU: stands for "central processing unit" and it contain: The arithmetic and logic unit

Advanced Pre-Warning System in Railways

1409 words - 6 pages corresponding units for further processing. The receiver on the train is used to receive the transmitted image signal from the two units. This signal is then sent to a system on the train to process and display the image captured from the two units. Main System: The main system consists of various components including a Camera Activation Unit, A database containing all the RFID tag numbers, Image Signal Processing Unit and a signal

Auditory Processing

2275 words - 10 pages . Auditory processing is labeled as a low-incidence disorder. According to ASHA, prevalence data for central auditory processing disorder is narrow and there are no authoritive statements of the prevalence available. Chermak and Musiek (2007) estimated 2-5% of school age children have APD. With no standard to follow prevalence rates will vary because there will be different ways in which they are measured. Developmental Sequence It is pertinent to

Similar Essays

The Central Processing Unit Essay

529 words - 2 pages Microprocessors, also called central processing units (CPUs), are frequently described as the 'brains' of acomputer, because they act as the central control for the processing of data in personal computers (PCs) andother computers. Chipsets perform logic functions in computers based on Intel processors. Motherboards combineIntel microprocessors and chipsets to form the basic subsystem of a PC. Because it's part of every one ofyour computer's

The Central Processing Unit (Cpu) Essay

1601 words - 6 pages The Central Processing Unit (CPU)What exactly is a CPU? If you opened up a Mainframe or a Supercomputer the answer you would get could surprise you. These machines hav lots of printed circuit boardsheld in framed cases and connected by endless metres of cables to form their CPUs.Looking into a PC is much simpler - you can find an identifiable chip as the CPU. Another surprise is that, for all their physical differences the CPUs of both PCs and

The Computer Central Processing Unit Essay

2410 words - 10 pages the hard drive, the Random Access Memory (RAM), and the Central Processing Unit (CPU). First let’s look at the hard drive, this is where data is stored. When you run a program it first gets loaded from your hard drive into the RAM and then into the CPU (Torres). There are two general types of hard drives, the most common type use spinning magnetic disks for data storage and the other type is a SSD (Solid State Drive) that uses semiconductors for

Central Processing Unit Essay

1050 words - 4 pages A central processing unit (CPU) is the hardware within a computer that carries out the instructions of a computer program by performing the basic arithmetical, logical, control and input/output operations of the system. The term has been in use in the computer industry at least since the early 1960s.[1] The form, design, and implementation of CPUs have changed over the course of their history, but their fundamental operation remains much the