Why Motherboard Has Battery?

Does this battery give power to computer? – No

Instead the battery provides power for the real time clock to run.

It’s a tiny battery active when you shut down your computer, for real-time clock and storing the computer’s BIOS settings, so your clock always shows correct time.

CMOS-Battery - techlala.com

It also saves the BIOS password. If you forget bios password just remove the battery and fit again after 20 min, it will reset password.

Every computer has a Basic Input/Output System (BIOS).

But new computers have UEFI firmware instead of BIOS or sometimes both. When your computer boots-up, the BIOS starts up and performs a power on self-test (POST) which initializes the computer’s hardware.

The BIOS then passes control over to a boot loader located on a device.You can go into the BIOS setting by pressing keys like F10/F12/F2/separate button for BIOS(provided by SONY) on the boot screen, it depends upon manufacturer.

bios setting - tehlala.com

 

Long form is NT loader, NTLDR is a program loaded from the hard drive boot sector that displays the Windows NT startup menu and helps Microsoft Windows NT/2000/XP load. This portion of the boot sequence was replaced by Bootmgr in Windows Vista and later versions of Windows. Sometimes error occurs that” NTLDR or Bootmgr is missing” then OS doesn’t load

 

The registry is also called as database in Windows that contains important information about system hardware, installed programs and settings, and profiles of each of the user accounts on your computer, that’s it. That’s why if you uninstall any one month trial software and after one month it won’t be installed for next one month because it has stored stored in registry when you install first.

 

Plug and Play (PnP) is a Feature developed by Microsoft for its Windows 95 and later operating systems that gives users the ability to plug a device into a computer and that device is automatically available for use. Consider an example: if you attach mouse / keyboard it ready to use within few secondsno need extra configuration, that’s a power of PnP. Non plug-and-play device would require several steps of installing drivers and setting before it would work

 

A transistor is a device that regulates current or voltage flow and acts as a switch or gate for electronic signals. Transistors consist of three layers of a semiconductor material, each capable of carrying a current.

different sized transistors techlala.com

The transistor was invented by three scientists at the Bell Lab in 1947, and it rapidly replaced the vacuum tube. A transistor regulates current or voltage flow and acts as a switch or gate for electronic signals. A transistor consists of three layers of a semiconductor material, each capable of carrying a current.

 

CPU techlala.com

The central processing unit (CPU) is called brain of your computer. It handles all the instructions you give your computer, and the faster it does this, the better.

 
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