...Differentiate among various styles of system units of system units Identify chips, adapter cards, and other Identify chips, adapter cards, and other components of aamotherboard components of motherboard Describe the components of aaprocessor and how Describe the components of processor and how they complete aamachine cycle they complete machine cycle Identify characteristics of various personal Identify characteristics of various personal computer processors on the market today computer processors on the market today Define aabit and describe how aaseries of bits Define bit and describe how series of bits represents data represents data Explain how programs transfer in Explain how programs transfer in and out of memory and out of memory Differentiate among the various Differentiate among the various types of memory types of memory Describe the types of expansion slots and Describe the types of expansion slots and adapter cards adapter cards Explain the difference among aaserial port, aa Explain the difference among serial port, parallel port, aaUSB port, and other ports parallel port, USB port, and other ports Describe how buses contribute to aa Describe how buses contribute to computer’s processing speed computer’s processing speed Identify components in mobile computers Identify components in mobile computers and mobile devices and mobile devices Chapter 4 The Components of the System Unit Next The System Unit What is the system unit? Case that contains electronic components...
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...NT 1110 Unit 8 System Performance When addressing system performance an element that is often overlooked is disk fragmentation, even on a brand new system with plenty of RAM and a high end processor the performance of the hard disk may be a bottleneck causing performance issues. When you format a hard disk the process divides the disk into sectors, the file system groups the sectors into clusters which is the smallest unit of space available for holding a single file or part of a file. If you save a file on a freshly formatted disk the information would be written in contiguous clusters and since the clusters of the file are physically adjacent to each other the components of the hard disk work very efficiently pulling the data in one operation. The problem is hard disks do not stay organized very long. When you add data to an existing file the file system has to allocate more clusters for storage and typically these clusters end up in a different location on the disk. As files are deleted it creates gaps in the arrangement of the contiguously stored files and as you save new files the file system uses up all of these bits of free space resulting in new files being scattered all over the disk in noncontiguous pieces which results in performance issues because the disk heads have to spend more time moving from cluster to cluster before they can read or write data. Process load and the number of running process affect system performance because each process running...
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...UNIT 4: HUMAN PHYSIOLOGY ASSIGNMENT TITLE: MUSCULOSKELETAL SYSTEM:j PECTORAL GIRDLE: The human appendicular skeleton is made up of bones of both the upper limbs and the lower limbs. Within the skeletal system a limb girdle can be referred to the bones which connect a limb to the axial skeleton. There is the pectoral girdle also known as shoulder girdle and the pelvic girdle also known as hip girdle which are the bony apparatus with which a limb is joined to the trunk. The pectoral girdle and pelvic girdle are both sturdy sockets for the limb joints although the pectoral girdle is larger and flexible it does not bear a lot of weight and it can be a shallow socket for limb attachment. Whereas the pelvis girdle on...
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...communicate with each other. The picture below depicts a motherboard with all the main components named. 2.2.2 Central Processing Unit (CPU) The CPU is the brain of the computer. It is responsible for all the calculations carried out in the entire computer system. Furthermore the speed of the CPU effects the overall performance of the computer system. The CPU is available in several architectures delivering various levels of performance. Few of them are • Embedded CPU architectures • Microcomputer CPU architectures • Workstation/Server CPU architectures • Mini/Mainframe CPU architectures • Mixed-core CPU architectures There are two main components in the CPU the first is known to be the Arithmetic Logic Unit (ALU) this unit performs the arithmetic and logical processes of the computer system. The second is the Control Unit (CU) this unit it responsible for extracting instructions from the memory and decodes and implement them, while calling the ALU whenever necessary. Apart from these components there are few other components within the CPU such as Registers, Cache Memory and Internal Bus. Registers are high speed data storage areas within the CPU. All the data are usually processed after it is depicted in a register....
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...Unit 2 (Computer Systems) Assignment 1 (Task 2 P2 & P3) A description of the purpose and function of an operating system. Ensuring you discuss: The difference between command line and GUI (Graphical User Interface) operating systems- Command line is a user interface, the command line is a user interface which is navigated by typing in commands prompt, as opposed by using the mouse which will perform a command for example, the root MS-DOS command line prompt is C:\>. The GUI (Graphical User Interface) only uses a keyboard to navigate by entering commands and it does not use a mouse. GUI (Graphical User Interface) uses windows, icons and menus to carry out the commands, for example opening, deleting and moving files. Although the GUI (Graphical User Interface) operating systems are through the use of a mouse and the keyboard can also be utilized by using the keyboard shortcuts or the arrow keys....
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...Unit 8 Analysis – System Performance NT. 1110 | System Performance The performance of a computer system is based on numerous factors. The CPU, GPU (video card processor), RAM, VRAM, and hard drives all have some impact on how well a computer system performs. With the continuous use of hard drives, fragmentation occurs. This occurs when files cannot be contiguously stored. Basically, files are broken down and scattered around the hard drive. The computer than has to provide extra work to reassemble the files when needed. This effectively slows computer performance, making applications launch slower, accessing files more time-consuming, video performance drop, and more. Also, the computer booting and shutting down takes more time with disk fragmentation. One of the ways to improve system performance is to upgrade RAM. When a computer does not have enough RAM to use, it has set up a virtual memory file. The virtual memory file is space on the hard drive the computer makes to treat as RAM. Also, with RAM being an electronic system as opposed to the mechanical hard disk, it takes more time for data transfer to happen between the RAM and hard drive, unlike the RAM and CPU. With adding more RAM, “running” out of usable RAM memory has a small chance of occurring. This means that the CPU can continue to interact with the RAM for temporary files, rather than having to interact with the RAM then the hard drive. References Computer Memory Upgrade. (2003). Memory...
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...P2-Explain the purpose of an operating system The Operating system is the most vital set of programs which runs on the computer. Its PURPOSE is to providing the very basic user interface there are no other programs or application running. The key roles of the Operating system are to recognise input from peripherals such as a mouse, keyboard, USBs, digital sketch pads and other input devices and also controls other peripherals such as printers and scanner. It also has the role of managing hardware resources such as data storage, memory, processors alongside input and output devices. M1-Compare the features and functions of different operating systems Introduction There are two main operating systems that I will be talking about, the names of these operating systems are Windows and Linux. These operating systems have similar properties, features and functions. However they also have different functions as well as features. I will be comparing the features and functions of the two different operating systems, Windows and Linux. Ability to customise Operating systems should be customisable, this means if operating systems have the ability to change their backgrounds of desktops, colour schemes and changing the layout. Windows XP, Vista,7 and 8, all allow you to customise the background of the desktop. This means that a picture...
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...Digestive system P2 The Digestive system is a bodily system that converts food into energy, nutrients and cells for the repair of the body. The digestive system consists of a number of organs; the Stomach, Liver, Gallbladder, Pancreas, small Intestine, large Intestine and many more. Digestions Digestion is the process that turns food into its component chemicals. This starts off with mechanical digestion, this is the physical breakdown of big pieces of food into smaller pieces, chewing in your mouth then continues with the mixing of the muscular organs stomach and small intestines. At the same time chemical digestion is occurring, this breaks down more larger, complex molecules into smaller molecules that are easier to absorb. Chemical digestion also started from the chewing process in the mouth where food is mixed with saliva, saliva splits complex carbohydrates to simple carbohydrates. It continues in the stomach with enzymes and acid but the rest happens in the small intestines. The pancreas produces pancreatic juice that has digestive enzymes that break down complex molecules like fats and proteins. Absorption...
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...ahead. Must the project go ahead, feasibility will make a development design and a financial plan projection for the phases of development. Besides feasibility recommends what action should be taken dependent on different aspects such as working and technical. The second stage is Requirement Analysis and Design. Requirement Analysis gathers the systems requirements. In this stage there's a detailed study of the business requirements of the organisation. Additional drive of this stage is to make a reasonable model of the new system. In Systems analysis the organization user also examines business procedures and records what the new scheme has to do. In the systems design stage the user interface is intended to single out the inputs, outputs and processes. Along with this the internal and external panels along with computer - founded and manual features makes assured the system will be safe, consistent, and precise and sustainable. In the systems design stage we have to conclude the structural design of the application. This displays systems analyst how to modification the logical design into software package modules and code. The systems design stage result is logged and then shown to the organization so they can appraisal and accept it....
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...Three operating system – Windows, Mac OS X, and Linux- dominate the world of computing today. Windows is the most popular out of the three with having 90 percent of the operating market share. It is in Commercial buildings, Industrial facilities, as well as home computer. Widows, having been introduced in 1985, is a very mature and complete piece of software. Yet, it has its flaws. Apple’s Macintosh OS is even older than Windows. It’s the first successful graphical-based OS, It was released a year before it’s Microsoft counterpart. Linux has the unlikely origin of being the hobby project of finnish university student Linus Torvalds. The Linux kernel was first released independently in 1991. But what really sets them apart? Each operating...
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...fly without having to boot into a special disk utility. The Disk Management utility can only manage file systems compatible with Windows operating systems, such as FAT16/FAT32 and NTFS. Let’s say you want to make a partition smaller so you can create another partition on a hard drive this utility will allow you to do so. ScanDisk- A DOS utility included only in Windows 95/98/ME it is used to scan the suface ofthe hard disk and repair errors on the hard drive scan disk scans for lost clusters on the hard drive and turns them into .chk files. Chkdisk -is a command line program that also scans the hard drive and looks for lost clusters on the hard disk. It reports the current amount of free memory and disk space. If you use the chkdsk /f command which is Chkdsk with the /f = fix command it reclaims the lost clusters and turns them into .CHK files. FDisk- Is a program that runs in MS-DOS and non-NT versions of Windows and creates partitions on the hard drive Windows 95b first added support for FAT-32 partitions into fdisk. Before that it only supported partitions up to 2 GB using FAT-16. Disk Manager- A driver first introduced in 1985 from Ontrack Data Recovery, a Kroll Ontrack subsidiary, Eden Prairie, MN (www.ontrack.com) that allowed older DOS PCs with a 32MB disk limit to access larger drives. Since PCs made before 1994 may have had a system BIOS that did not support larger drives, the Disk Manager utility grew in popularity and was often bundled with new...
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...Unit 8 Analysis 1: System Performance A file system on your computer may be fragmented, and cause the whoel system to take te bottleneck effect into play. Usually disk fragmentation is one of the most overlooked but common problems of a slow system, and even with a brand new, fast system, a fragmented disk drive can make it extremely slow. It will become most noticeable when loading large files like movies, not even moving them, just streaming from you rhard drive can cause your system to have performance issues. Some database files may be large in file size as well and can be seen as aproblem with a fragmented disk. Over time with using the large files you will see a performance degradation cause by disk fragmentation. When a hard drive is formatted into sectors, each e=sector is assigned 512 bytes of data, which then whichever file system you are running will depend on how these sectors are grouped into clusters. A cluster is the smallest unit of space to hold a single file, and on NTFS disks, the cluster size depends on the overall size of the hard drive. When the system has a brand new hard drive and you save a file onto it, the adjacent clusters are free of space and those spaces are filled in order respectively, which makes it easier on the hard drive to access these clusters to retrieve the file, and the mechanical components work more efficiently and improve the life of the overall hard drive. Over time with deleting and saving different files, th files that are...
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...Pearson Edexcel General Certificate of Education May–June Summer 2016 Examination Timetable – FINAL Home Pearson Edexcel General Certificate of Education May–June Summer 2016 Examination Timetable – FINAL For more information on Edexcel qualifications please visit http://qualifications.pearson.com Notes Pearson Edexcel General Certificate of Education May–June Summer 2016 Examination Timetable – FINAL Home Notes Pearson Edexcel GCE Summer 2016 Examination View by Week Week Week 2 Week 3 Week 4 Week 5 Week 6 Monday 16 May Monday 23 May Monday 6 June Monday 13 June Monday 20 June Monday 27 June Tuesday 17 May Tuesday 24 May Tuesday 7 June Tuesday 14 June Tuesday 21 June Tuesday 28 June Wednesday 18 May Wednesday 25 May Wednesday 8 June Wednesday 15 June Wednesday 22 June Wednesday 29 June Thursday 19 May Thursday 26 May Thursday 9 June Thursday 16 June Thursday 23 June Thursday 30 June Friday 20 May Day Week 1 Friday 27 May Friday 10 June Friday 17 June Friday 24 June Friday 1 July View by Subject Subject A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Pearson Edexcel General Certificate of Education May–June Summer 2016 Examination Timetable – FINAL Notes Home Notes 1. Conduct of Examinations 2. Key Dates • Each examination must be taken on the day and at the time as shown on the timetable. • The date for the restricted release of results to centres is Wednesday 17 August 2016. • The published...
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...Consider a single system which has similar equipment and incorporates, power, cooling system, server, processor, a system switch, backup system and UPS system. Regardless of whether it is a individual system or the biggest data center, the center necessities are same in both which incorporates Working Equipment, power, and cooling systems. Let us talk about the equipment and system failures and its causes in both individual systems and a monstrous server farm independently and the alleviations to endure the disappointments. Visit disappointments incorporate loss of energy supply gadgets, fluctuating force input, disappointment of the cooling system, Failure of Network Equipment, harm to information links, Shutdown of servers, Failure of Security systems and loss of correspondence...
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... Speed, how fast the computer can complete a task, this will be second most important for rendering images and code for games. Looking at the needs of the company my recommendation would be for the company to run PC’s with Windows 7. I recommend this OS for several reasons: its newer, resource management, security options, very compatible, easy to maintain and upgrade. When it comes to any large task that requires a PC to be tasked, resource management is going to be crucial. In the field of game development the largest task is going to be rending and compiling the game. Both of these require lots of memory, CPU time and hard drive activity. Windows 7 can stand up to the task because of it new and improved resource management system over Vista and XP. Its more streamlined programming allows for less usage by the OS to running tasks in the background, and more integrated drivers allow for better control over the hardware and what it is doing. In this sense Windows 7 can perform rending and compiling faster, more reliably, and securely. Another major advantage Windows 7 has over other OS’s is its security center. Windows 7 has a brand new security center that allows for more control over what has access and what does not. The security center controls the firewall, checks for updates, makes sure that virus protection is...
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