Components Of A Computer System Cpu Information Technology Essay

Components Of A Computer System Cpu Information applied science EssayThe central processing unit is the serving of a computing machine administration that carries pop out the pedagogicss of a electronic reckoner program. It is chief(prenominal) pause carrying out the computers roles. The central processing unit transfers out from each one instruction of the program in order, to perform the basic arithmetical, logical, and input/output trading operations of the system.The mainframe has m all different purposes which can be moving selective reading from one location to an former(a), building decisions and jumping to a new point of orders based on those decisions. The CPUs speed is a measure of MHz ( megacycle per second) or more recently GHz (gigahertz). A chip with a megahertz rating of 900 MHz would be able to complete 900Million cycles every second.The types of CPUAMD (Advanced Micro Devices)Intel Celeron go down (Random rag retrospection)RAM is a repositing easin ess which provides space for your computer to read and write info to be accessed by the CPU (central processing unit). When people mention to a computers memory, they usually designate its RAM. The programs and data that we use be fundd in the RAM temporarily so that the processor can access them fast. RAM is utilise to load and harmonise programs or applications on a computers be operating(a)(a) system. Extra RAM means more applications and programs can be run simultaneously. The speed is thrifty in MHz, (or megahertz). The electrical content of RAM is mensurable in bits, bytes, kilobytes, megabytes, gigabytes, terabytes and the typical capacity of RAM in a PC is 512MB to 8GB.There argon some other types of RAM which argonSDRAM (synchronous dram)DDR(double data ratter)Rambus Dram (RDRMM) read- single depot (Read Only Memory)Is a class of remembering media employ in computers and other electronic tresss. training stored in ROM cannot be limited, or can be modified o nly slowly or with difficulty, so it is mainly used to take firmw ar. The BIOS softw be is construct into the PC, and is the first code run by a PC when powered on (boot firmware). The primary function of the BIOS is to load and work an operating system. BIOS software is stored on a non-volatile ROM chip built into the system on the mother board. The first job for the BIOS is to initialize and diagnose system devices such as the video discuslose card, keyboard and snarf, hard magnetic turn, CD/DVD hale and other hardware.These are the types of ROMMask-Programmed ROM (MROM)Programmable ROM (PROM)Erasable-Programmable ROM (EPROM)Electrically Erasable PROM (EEPROM)Input devicesInput devices are some(prenominal) piece of computer hardware equipment used to provide data and give in information to the computer. They allow us to enter the information and data into the computer.E.g.MouseIs an input device which inputs information by clicking the purloin and being able to move th e arrow in the monitor by using the mouse. Mouse can display mainframe data records that look at a leading 4 byte record length counter. With proper options, mouse can add carriage returns to fixed length records.Types of mouse optical maser mousemechanical mousecordless mouseKEYBORADThe set of typewriter comparable keys that enables you to enter data into a computer. Computer keyboards are similar to electric-typewriter keyboards that contain additional keys. It control the computer and purposes includes a plurality of sets of twain or more keys arranged for receiving the extremitys of the finger of a hand of an operator, the keys of each set have such a small superficial edge area and are clustered to nominateher. So as to be well comprehended and selectively drop deadd by a single finger tip of an operator. There different types of keyboardsErgonomic KeyboardsWireless keyboardsIlluminated keyboards widening DevicesOutput Devices are used to communicate the outcomes of d ata processing carried out by information to the computer to the outside world. Which we get information out of the computer.E.g.Printers bequeath release anything that in on that is on the monitor onto paper. This can be pictures, words and leans.MonitorMonitor is a device that displays images or symbols generated by computers, an output device that is a part of your computer display system. They reply as the visual display to help you navigate your computer. Also to display text and graphics, produced by a computer. The resolution is the measurement of the number of pixels that a computer displays, in like manner called a computer monitor, can show at one time. Monitors that display more pixels fracture a sharper, brighter image. Monitors are metric in inches, diagonally from top left to bottom right.Types of monitorsCRT (Cathode radio beam Tube) MonitorLCD (Liquid Crystal Display) MonitorPrintersPrinter is a circumferential which produces a text and/or graphics) of docume nts stored in electronic form, usually on physical print media such as paper or transparencies. It lets you to get a hard copy of a document, or picture. DPI (dots per inch) most newswriters print 600 dpi printers print 600 tiny little dots across one inch and 600 dots vertically for one inch. The higher the resolution of your printer or image setter, the greater detail you can print and the better appearance of your output. The speed of printers is measured in print-per-minute (PPM) for example, laser printer ratings range from 6 to 15 ppm, inkjets are rated 4 ppm and up for black text, and photo-quality inkjets range from 0.3 to 12 ppm, depending on the job.Types of printers optical maser printersInk-jet printersDot matrix printers magnetic disk warehousing devices (Backing store)Disk Drives are used to record information from the computer onto a floppy disk or CD.Hard Disk DriveHard disk drive (HDD) main computer memory used to permanently store all including the operating sys tem, data, files and programs on the computer. Most hard drives are permanently stored in an familiar drive bay at the front of the computer. Capacity per HDD increasing from 3.75 megabytes to greater than 1 terabyte. The typical capacity of hard disk in a PC is uses a 400 to 500 GB drive.Types of Hard DiskDesktop Hard Disk Types 3.5, IDE and Sata InterfacesLaptop Hard Disk Types2.5, 1.8, IDE, Sata, small computer system interfaceServer Hard Disk types3.5 Sata, SCSIOptical Disk Storage CD/DVD/Blu-RayCD DiskA Compact disc (CD) is an optical disc used to store digital data. It was originally developed to store sound recordings exclusively, scarce later it also allowed the preservation of other types of data.It is used to store data, video or music. So that makes it a storage device. A normal CD has a capacity of about 74 minutes of standard CD audio music. There are elongated CDs that can actually exceed this limit and pack more than 80 minutes on a disk. CDs are capable of stor ing up to 700 mb.The types of CDs are compact disc recordableOM is a pre-pressed compact disc that contains data accessible to, but not writable by, a computer for data storage and music playback.CD-R a CD-R (Compact Disc-Recordable) is a variation of the Compact Disc invented by Philips and Sony. CD-R is a Write Once Read Many (WORM) optical medium, though the whole disk does not have to be exclusively written in the same session.CD-Rewritable disk, a type of CD disk that enables you to write onto it in multiple sessions. One of the problems with CD-R disks is that you can only write to them once.DVD DiskDVD (Digital Video Disc) is an optical disc storage media format, which are of the same dimensions as compact discs (CDs), but are capable of storing almost seven times as much data. The storage capacity of a DVD is approximately 4.7 GB (gigabytes). A ternary layer doubles the storage but requires a dual-layer DVD actor/recorder to use the dual-layer media.The types of DVDSDVD-R DVD-RWDVD-ROMBlu-Ray DiskBlu-ray Disc is an optical disc storage medium designed to supersede the DVD format. The format defines as its standard physical media a 12cm (same as DVDs and CDs), 25 GB per-layer optical disc, with dual layer discs (50 GB) the norm for feature-length video discs and additional layers achievable later. The capacity of Blu-ray disk is 25GB (single-layer) 50GB (dual-layer).USB Memory StickUSB flash drives are computer devices that inputs information that is saved on the USB and inputs it in to the computer when you insert the USB. Also typically removable and rewritable, and physically much smaller than a floppy disk. USB drives range in capacity from megabytes up to 256GB and offer much more storage than writable CDs and DVDs.Operating systemIs software, containing of programs and data, which runs on computers and manages the computer hardware and runs common services for active carrying out of various application software. Operating systems are responsibl e for everything from the control and apportioning of memory to recognizing input from external devices and transmitting output to computer displays. They also manage files on computer hard drives and control peripherals, like printers and scanners. An operating system also has a vital role to play in security. Its job includes preventing unauthorized users from accessing the computer system.Examples of operating systemsWindows VistaWindows 7 parturiency 2Types of computersDesktop PC (personal computer)Is a personal computer any common-purpose computer whose size, capabilities, and original sales price make it useful for individuals and which is intend to be operated directly by an end user with no straits computer operator3 common applications of desktop PCAccess the internetMost time used in offices e.g. Microsoft office used to alto of things like writing letters, posters etc.Starting your own domicil business, e.g. selling items through online auction websites.LaptopA laptop computer or simply laptop, is called a notebook, is a small personal computer designed for portability. Usually all of the interface hardware needed to operate the laptop, such as USB ports, graphics card, sound channel, etc., is built in to a single unit. Laptops hold high capacity batteries that can power the device for general periods of time, attractive portabilityThe main purpose of a laptop computer is to be portable.3 common applications of LaptopCan be used away from an outlet using a rechargeable battery.Connect to any lucre, including wireless networkAnswer email on the train, plane, or passenger seat of a carPalmtopA computer small teeming to hold in one hand and operate with the other. Also called a hand top, these ultra-small computers may have particular keyboards or keypads for data entry applications.3 common applicationsSend an emailCreate text centerAccess internetNetwork ServerA network server is a computer planned to process requests and carry data to other computers over a local network or the Internet by using the same network.3 common applicationsWeb server a static content to a Web browser by despatch a file from a disk and serving it across the network to a users Web browser.Chat Server enables a large number of users to exchange information in an environment similar to Internet newsgroups that offer real-time discussion capabilities.Fax Servers a is an ideal solution for organizations look to reduce incoming and outgoing telephone resources but that need to fax actual documents.SupercomputerA supercomputer is a computer which performs an amount of speed which is off the beaten track(predicate) above of other computers. Known constantly changing the world of computing. Supercomputers are used for highly calculation-intensive tasks such as problems involving important physics, weather forecasting, humor research, molecular modelling .A particular class of problems, known as talkative Challenge problems, are problems whose fu ll solution requires semi-infinite computing resources.Task 3Diagram flows around a computer systemBacking store(Disk storage devices)CPUCentral Processing UnitMain memory(RAM)Output devicesInput devicesWhen clicking on the mouse or typing on the keyboard its sends information to the CPU.Once the information is recognise on to the CPU, The CPU sends informations on to the output device and will appear either on the printer or monitorWhen the PC is turned on the RAM sends information to the CPU and sends information to the backing storeWhen you save work on to the PC the backing store saves it sends the information to the CPU then to the main memory and is saved there