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Showing posts with label Key Components. Show all posts
Showing posts with label Key Components. Show all posts

Motherboard

06:12 | Labels:


Motherboard

CPU or Central Processing Unit is the main functional unit of the computer. CPU performs all the functions and carries out all tasks whether major or minor on the computer; in short CPU is rightly called the ‘Brain’ of the computer.

Motherboard contains chipset which performs the most basic functions. The chipset consists of the BIOS (Basic Input Output System) and also houses the real time clock which maintains the system’s time. It is the BIOS mounted on the motherboard which is one of the main features which determines the performance of your PC.

To connect external devices motherboard has PCI (Peripheral Component Interconnect) where a user can attach devices like network card, sound card etc.

The circuit of the motherboard provides all the important connections for a system to perform effectively specifically in the case of CPU. Capability of the motherboard decides the amount of RAM and CPU it supports. Some motherboards might be suitable for a 32-bit processor and may not be able to fulfill the requirements of a higher processor. Similarly in the case of RAM make sure while buying the motherboard that if your demand from the PC increases in future then you can increase the RAM of your system at will and your motherboard supports it.

BIOS as already stated, is the one of the key components mounted on the motherboard is responsible for maintaining the operating system, the power supply and the hard disk.

Motherboard

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Posted by Unknown

What is CPU (Central Processing Unit)

06:12 | Labels:


What is CPU (Central Processing Unit)

CPU or Central Processing Unit is the main functional unit of the computer. CPU performs all the functions and carries out all tasks whether major or minor on the computer; in short CPU is rightly called the ‘Brain’ of the computer.

When the CPU’s were developed in 1960’s they were large machines almost the size of an average room and were quite expensive, but gradually whole machinery was replaced by Integrated circuits (IC’s) and this reduced the size of the CPU to much compact one. Tthe function of the CPU is to execute the assigned task or series of instructions given to it. Most CPU adheres to Von Neumann architecture and carries out the task in four steps
  • Fetch
  • Decode
  • Execute
  • Write back
Fetch – During this step CPU retrieves the instruction from the software program memory. Program counter determines the location in the program memory.

Decode – Once the CPU fetches the instruction next step would be to decode the instruction. During decoding of the instruction, it is arranged and broken down so that it can be easily executed.

Execution –After the information gained from the decoding execution is performed, required memory is allocated for data to perform e.g. if the command for print is given then first the instruction reaches the CPU which then directs the printer to print a page.

Write Back – When the execution step is performed then after that CPU writes back the results onto the main memory or on to the internal CPU register.

Performance of the CPU is measured in terms of Instructions per second (IPS) it can execute. Simply put, we can calculate how many instructions CPU can carry out in a given amount of time to measure its capability Dual core processors are twice as powerful as single processors because they are able to carry out tasks at twice the speed of the latter.

Components of CPU

  • Arithmetic Logic Unit (ALU) – As the name suggests this unit carries out all the arithmetic (mathematical) and logical (comparison) operations. This unit also contains the electronic circuitry.
  • Control Unit – It coordinates the activities of other units and signals to carry out instructions stored in the memory.
  • Registers – This could be defined as small temporary storage areas or memory with high speed and they are controlled by control unit. There are various registers with each register performing specific task.

Various registers in the CPU are:

  • Accumulators – They hold the data after calculations are carried out
  • Address Registers - This stores data which is to be used by programs to carry out the instructions
  • Status Register – This register maintains the status of the last operation executed by the CPU
Block Diagram of CPU

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BIOS

06:11 | Labels:


BIOS

BIOS is an acronym for basic input output system. As the name suggests this built in software is responsible for running all the major input and output devices like keyboard, monitor and disk drives. BIOS is actually the first software which actually runs when one turns on his PC or laptop. When we turn on our PC, BIOS executes the startup program placed either on the CD or a hard-disk and then turns on the PC giving the control to the operating system.

During the startup procedure, the BIOS conducts a test known as Power On Self Test (POST) which detects all the devices and programs needed to start the system. If any error is encountered during this procedure, the message is relayed to the BIOS.

BIOS resides on the ROM chip which protects it from any failures. As a user, you can do changes in BIOS configuration and compatibility with components by pressing a key as the computer begins booting which is generally the “Delete” key.

Most PC manufactures now use Flash BIOS which allows user to update the BIOS settings and the version itself once the new updated version has been released by manufacturer.

BIOS setup even allows you to keep a BIOS password to prevent unauthorized access and prevent anyone from tampering with your system’s settings. But remember that BIOS password is different from your operating system password.

If one is not certain about the BIOS settings then a person must not fiddle with it, as any setting gone wrong can hamper the functioning of your computer.

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Are you irritated with the computer keeps freezing error?

06:10 | Labels:


Are you irritated with the computer keeps freezing error?

These days, the use of computers has increased to unprecedented levels. The users need computers to carry out so many daily level functions normally.
The computer keeps freezing or PC crash error however impediments the normal use of these machines for some time.

Blue screen of death A  PC crash situation just consists of a blue screen of death which suddenly appears or the computer programs becoming non responsive.  The users can however combat this error quite easily instead of panicking and stopping working on computers for many days. This PC crash error which contains a blue screen of death is extremely perplexing for any user because it plays havoc with his/her needs. He can’t work on the computer as intended and complete the work on time. The computer screen resumes normally after the computer is restarted, but all the unsaved work before the PC crash is gone or deleted.

He/she can lose so much critical work saved on the machine. Now, there can be many reasons why you have met with a blue screen of death on your PC?
  • Too much employment of programs at once
  • Low RAM
The user can avoid the problem of PC crash by using fewer programs simultaneously on the PC. Either you can minimize the usage of the programs to avoid this PC crash situation or can opt for a higher RAM which allows higher program usage. This computer keeps freezing situation occurs because the user puts an excessive load on RAM through his program usage.
Its also important to repair some wrecked registry files which are caused by a faulty deletion or addition of programs. Once the registry is repaired, no more blue screen of death is caused.


Using so many programs altogether


When , the PC crash situation does not contain the blue death screen and just involves the stoppage of the computer functions altogether, the user can easily get rid of this computer keeps freezing situation by logging on to the task manager and stopping the erroneous program. The computer keeps freezing situation is just caused by a computer program that froze.
The only way a user can minimize this computer keeps freezing situation, where because of a single non responding program, the entire computer set up refuses to work up permanently, is to delete some of the extra unused programs stored on the PC. In this computer keeps freezing scenario, the user presses the mouse and the keyboard, but there is no response. Restarting the PC in this scenario means removing all the work that was not saved.
We at Complete PC Pedia offer all the required help to solve all kinds of computer keeps freezing situation. Our tutorials aid you in solving such situations where your PC goes kaput and the screen becomes blue.

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