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Complete Parts and Function of Computer Keyboard

BELOW ARE THE MOST PARTS AND FUNCTIONS OF THE COMPUTER KEYBOARD THAT COMMONLY USED. A computer keyboard is used to enter commands of...

Most Common Parts Inside the Computer System Unit

System Unit


SYSTEM UNIT OR CPU Under the three fundamental devices of the computer as one unit, they are input devices, output devices, and the System Unit. System Unit or CPU (Central Processing Unit). Act as the main device of the computer which controlled the main processing of the computer that accepts signal coming from both input/output devices. And those devices of the computer externally connected to the CPU. And processing it according to its series of instructions through the logical program. Therefore, inside of this System Unit, there is hardware installed and connected together to perform the processing of the instructions (Data) of both different applications of the program.

I collected different pictures of the hardware and I posted them here in this post below. Just study this in order to familiar this hardware and let you know the inside of the System Unit.






Motherboard or MOBO



MOTHERBOARD or MOBO- act as the main assembly of a computer mounted a variety of chips. It is a hardware of computer task to hold and control other hardware inside the System Unit both Input/Output devices. The hardware is the processor, memory card or RAM, Video Card or VGA (PCI, AGP, PCI ‘e), CMOS/BIOS battery, Power Supply Unit(PSU), Hard Disk Drive(HDD) SATA or PATA, CD/DVD ROM, WIFI card, LAN Card, Cooling System (Air Block), Sound Card, Internal Modem Card, and USB card. The motherboard has a different form factor according to its generation through processor type. Such as the ATX Socket 775 of Dual Core and Core2duo processor, Socket 478 of Intel P4 1.5- 2.0, AM2 of AMD processor Sempron 64 and Athlon, and the Obsolete Motherboard Slot I and II and the Socket 370 of Pentium 3 processor.

AMD Processor



THE PROCESSOR Or CPU chip- This is the heart and brain of the Personal Computer (PC). The task to fetch, decode, and execute instruction through the different resources of the computer, such as the Network or Internet. The two brands of processors are the AMD(Advanced Micro Device) and Intel, the most well-known user brand called quad-core processor.

Nvidia GeForce GT 730 Video Card PCI'e



THE VIDEO GRAPHIC ADAPTER Or called VGA- responsible for interpreting display signal to the monitor screen through the Graphic Processor Unit(GPU). There is 4 type of Video Card ever build called as EISA or ISA (Enhance Industry Standard Architecture), PCI(Peripheral Components Interconnect)they are oldest Video card. And the new one of the latest is the AGP(Accelerated Graphic Ports) and the PCI’ e (Peripheral Components Interconnect Express). As of now, the latest VGA card called PCI’e that has a 2GB support of memory can run the 3g and 4g games and graphical application software with the Operating System of Windows 7 and 8.

SATA 2 TB WD Hard Disk Drive or HDD Red NAS Server Storage



THE HARD DISK DRIVE or HDD- The primary storage media of the computer and the stationary drive of the Operating System (OS). As of now, there are two types of HDD, the non- ATA or PATA (Parallel Advanced Technology Attachment), that used a connection through the MOBO called IDE (Integrated Drive Electronics) and the SATA(Serial Advanced Technology  Attachment). This storage media is the largest storage that uses a magnetic disk called Platter that calculated with the disk size called KiloBytes (KB), MegaBytes (MB), Giga Bytes (GB), and TeraBytes (TB). The latest HDD that we have is the SATA that supports the operating system WinXP to Win 7 and 8.

Memory Card or RAM



THE MEMORY CARD- The Random Access Memory Card of the computer, task to address temporarily the data of computer. The main memory of the computer that holds the data while it is power on or the current impulses signal through the main system. There are several types of RAM called: EDO (ENHANCE DATA OUTPUT), SDRAM (Synchronous Dynamic Random Access Memory), and SDRAM- DDR (Double or Dual Data Rate). The support of this memory is depending on the type of the Motherboard and the processor. Front Side Bus (FSB) emphasizes the speed frequency of the 3 main hardware of the computer. The MOBO, processor, and RAM, it could run normally if this hardware have the same frequency, for example PC 100, 133, 2600, 333, 2300, 3700, 400, 533, 667, 800

Intel Processor And Cooling System



THE PROCESSOR COOLING SYSTEM- Task to produce air or regulates the healing properties of the CPU chip through the heatsink build of the air block. There are several types of cooling systems such as the water block that uses special water through the built-in radiator that produces water cooling to the processor chip. And the thermal block uses a special iron that sensitive to heat or temperature. If the cooling system failed the Operating System will damage called Blue Screen Of Death (BSOD). Normally, the cooling system regulates the processor temperatures up to 100 degrees Celsius. If the over-temperature experiences through the processor, the processor will drop the current speed to lower that will cause hang–up and producing BSOD failure to the OS.

Power Rated Power Supply Unit



THE POWER SUPPLY UNIT or PSU- Task to accept and convert the standard wall outlet electricity, 220- 240 volts AC in the Philippines through the primary circuit and divided it to low-level voltages, such as 3.3 volts, 5 volts, and 12 as the standard voltage supply of the entire system of the computer through the secondary circuit of the PSU. There are two types of PSU, the AT(Advanced Technology) and the ATX (Advance Technology Extension). The support of the PSU is dependent on the Form Factor of the MOBO, such as the ATX 600 watts that support also the SATA HDD and the legacy type.

Local Area Network Card or LAN Card



THE LOCAL AREA NETWORK CARD OR LAN CARD- A Network Interface Card (NIC) Task to receive or generate the electrical signal coming from the other unit of the computer that is connected to each other to form a Local Area Network. The purpose of this connection of computer is sharing of files and resources computer, such as the connection of the Internet using the ISP (Internet Service Provider). And the external hardware locally installed in the location where the group of computers being installed, such as the printer. This connection uses a UTP cable and RJ 45 to connect the network switches and Router for the connection of the Internet using the common topology called a star, through the two network model called as Peer to peer connection and dedicated server. This is opposite to the new topology that we have now called WIFI (Wireless Fidelity), a type of communication without using a wire.

These are all that I know inside of the computer system unit, there is a type of CPU as of now that supports the Firewire connection and the SATA connection externally. But because of the high cost of this hardware, it is seldom of the user to buy this kind of system unit. Other internal hardware that could be attached to the PCI bus is the MODEM, AUDIO CARD, USB expansion card, and the WIFI or Wireless card. Commonly, the MOBO has a built-in device such as a LAN port and audio port that do need this card. That’s it, follow this blog for another post.

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