Wednesday, 23 April 2014

Unit 2 Task 1

Task 1(P1)
Develop a series of illustrated blogger entries which explain each item listed below and what is each of their functions.
In addition, you must identify communication between components
You must cover the following components:
Internal system unit components:
  • processors
  • motherboard
  • BIOS
  • power supply
  • fan and heat sink or cooling
  • hard drive configuration and controllers SATA or IDE or EIDE
  • ports USB and/or parallel and/or serial
  • internal memory RAM, ROM and cache
  • specialized cards network and/or graphic cards
Peripherals:
  • Printer
  • Scanner
  • Twisted pair cabling
Backing Storage:
  • Pen drive
  • Hard drive
Wednesday 23rd April 2014

Processor: The function of the computer processor is to receive data and instructions. After the instructions are carried out it also receives output data. A processor receives this information from different computer applications, which will in turn perform operations depending on the order in which the instructions are received. This data is then sent to the various parts of a computer, including the monitor, hard-drives and RAM.

Motherboard: The motherboard is the main circuit board that everything is connected to. The motherboard’s purpose is to transport data and instructions from and to the processor to activate different functions in the computer.










BIOS: The BIOS (basic input/output system) offers a small library of limited input/output functions that manage computer. The BIOS controls the computer start up.










Power Supply: The power supply will provide all of the voltage required to run your computer. It can take alternating current and transform it into direct current that is more suitable for your computer.











Fan and Heat Sink: A heat sink is designed to lower the temperature of the computer and dissipate the heat into the surrounding air. A fan is an additional cooling device used to ensure the computer doesn't overheat by blowing cool air on the key components.












SATA, IDE and EIDE Hard-Drive Configuration: SATA drive doesn't have master settings or slave settings but they can be configured to be compatible for older operating systems and software by being set to appear as IDE drives. IDE/PATA drives can be connected to the same cable, with one set with master settings and one set with slave settings. EIDE provides faster access to the hard-drive and support for other drives. It is also possible to access drives larger than 528 megabytes by using EIDE.













USB, Serial and Parallel Ports: USB ports are used for the man accessories of a computer, including a keyboard, mouse, game controllers, lights and memory sticks to save and transport work easily. A serial port allows the computer to share data with a different device through a single stream. Parallel ports are used to connect several peripherals to the computer, including printers and scanners. In modern computers parallel ports are less common as USB ports are used instead.











RAM: Random Access Memory, or RAM, refers to the memory of the computer that is stored in a chip inside the computer. This chip is wiped clean whenever the computer is restarted.












Graphics Card: A graphics card allows for the fast transfer of information and can allow more graphic information to be used. Pre-built computers will come with graphic cards already installed, but if you are an avid computer gamer then a larger graphics card will be required to cope with all of the specific details.









Printer: Printers are used to produce documents and photographs. Printers are typically connected to a computer which will send the information necessary to reproduce the data on the computer.












Scanner: A scanner works as an inverted printer in that you can use the scanner to capture an image such as a document, magazine article, newspaper article or section of a book for computer editing.










Twisted Pair Cabling: This is a type of cable where two independently insulated cable are interwoven to reduce electromagnetic induction. This is typically used by older telephone networks but can be found in most other networks at some point too. Twisted pair cabling is the cheapest type of Local-Area Network (LAN) compared to Coaxial cables and Fiber-Optic cables.










Pen Drive: Pen drives are small devices that connect to the USB slot of a computer and are used for data transfer and storage. They can wear out and data transfer could be incomplete or data storage could become corrupted.









Hard Drive: The hard drive is the most important part of a computer, as it not only stores all of the information but it also contains all of the operating data and systems. Unlike RAM, the information that is stored in the hard drive will remain there even when the computer is off.










Communication: The entire computer is controlled through the Central Processing Unit (CPU), but communication in a computer is achieved through a system of ‘Buses’, which in turn is controlled by the north bridge (graphics, RAM and processor) and the south bridge (everything else). This ‘Bus’ system allows for data to be transported all around the computer. This system is also capable of linking several peripherals together through the same cable instead of a point-to-point system through individual cables.


2 comments:

  1. www: your P1 post does explain the function of computer hardware components.
    ebi: in addition to the descriptions, you must identify communication between components as requested in the original task and also illustrate your points with images or diagrams.

    ReplyDelete
  2. www: super response to my above feedback P1 now achieved.

    ReplyDelete