11 Aug 2016

Computer Science: Motherboard


Hello, readers! Having a good day, I suppose? For today's entry, I will be posting about motherboards. What exactly is a motherboard and how does it function?

A motherboard is the main printed circuit board found in general purpose microcomputers and other expandable systems. It holds and allows communication between many of the crucial electronic components of a system, such as the central processing unit (CPU) and memory, and provides connectors for other peripherals. It usually contains significant sub-systems such as the central processor, the chipset's input/output and memory controllers, interface connectors, and other components integrated for general purpose use.

Modern motherboards include:
- Slots where one or more microprocessors are installed.
- Slots where the system's main memory is installed (in the form of module containing DRAM chips).
- A chipset which forms an interface between the CPU's front-side bus, main memory, and peripheral buses.
- Non-volatile memory chips (ROM in modern motherboards) containing the system's BIOS.
- A clock generator which produces the system clock signal to synchronize the various components.
- Slots for expansion cards.
- Power connectors, which receive electrical power from the computer power supply and distribute it to the CPU, chipset, main memory, and expansion cards.
- Connectors for hard drives.

Motherboards are generally air cooled with heat sinks often mounted on larger chips. Insufficient or improper cooling can cause damage to the internal components of the computer, or cause it to crash. Passive cooling was sufficient for many desktop computer CPU's until the late 1990s; since then, most have required CPU fans mounted on their heat sinks, due to rising clock speeds and power consumption. Most motherboards have connectors for additional case fans and integrated temperature sensors to detect motherboard and CPU temperatures and controllable fan connectors which the BIOS or operating system can use to regulate fan speed. Alternatively, computers can use a water cooling system instead of many fans.

Motherboards use electrolytic capacitors to filter the DC power distributed around the board. These capacitors age at a temperature-dependent rate, as their water based electrolytes slowly evaporate. This can lead to loss of capacitance and subsequent motherboard malfunctions due to voltage instabilities.

With that, this entry ends here. Do send your comments and criticisms! I'll try my best to fix what's lacking in my next post. Thank you for reading!

1 comment:

  1. wow you dont make any excuses anymore, make improvement im impressed though huhu