A USB Wi-Fi adapter

A USB Wi-Fi adapter eliminates the need to hardwire the computer to a router or other network device. ... The adapterreceives signals from a wireless router or other wireless device and translates the signal so the computer user can access the Internet any time they are in range of a Wi-Fihotspot or wireless network. 

Types of lan card

The NIC contains the electronic circuitry required to communicate using a wired connection (e.g.,Ethernet) or a wireless connection (e.g., WiFi). Anetwork interface card is also known as a network interface controller, network adapter, or Local Area Network (LAN) adapter

Difference between a mechanical keyboard and a normal keyboard

A mechanical keyboard uses actual, physical switches underneath the keys to determine when the user has pushed a key. Press a key, and you press its switch down. Press the switch down, and thekeyboard sends a signal to the PC telling it that you pressed that key. At first, this design doesn't sound so remarkable.

Difference between speaker and microphone

However, in all likelyhood, the microphone is a Electret Microphone, which uses a capacitor which varies in capacitance in response to air pressure waves, e.g. sound. ... Speakers generally have lower impedance than microphones. Otherwise they are really the same thing, a transformer between sound and electrical energy

Here's a list of some motherboard brands.

Here's a list of some motherboard brands.

• Asus. Accepted as the world's largest motherboard manufacturer, Asustek Computer International is planning on expanding sales by 20% this year and is planning on achieving 50% of the global market by 2014. ...
• Gigabyte. ...
• MSI. ...
• ECS. ...
• Intel.

Difference between amd and intel processor

On the high end, such as in cases where you'll be pairing your CPU with a powerful AMD or Nvidia GPU, an Intel processor is the better option. In this case, using an Intel Core i3 or i5 CPU rather than an AMDequivalent can make the difference between 15 and 30 frames per second

Difference between desktop and all-in-one desktop

An all in one computer is basically a monitor in which you just plug in your mouse and keyboard, all the hardware are inside the monitor's case. While a desktop is made of a monitor + unit (motherboard, video card, RAM etc) in which you plug in your mouse and keyboard.

Difference between graphic card and video card

An integrated graphics processing unit (GPU) doesn't use its own RAM; it utilizes the system's memory instead. So, if you have a computer with 4GB of RAM, thevideo card can use anywhere between one and five percent of the available memory for graphics processing.
   

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How can you differentiate between a laptop hard drive and a desktop hard drive

Usually by the physical size of the device.

Typically desktop drives come in a 3.5″ enclosure like this;

(nowadays there are exceptions for SSD disks)

Laptop drives are usually 2.5″ or sometimes 1.8″ like this;

It is possible to use a laptop drive (both traditional mechanical, spinning disk and SSD) in a desktop, but not a desktop drive in a laptop. As you can see physical space for the desktop drive inside the laptop is usually the constraint.

Difference between CRT and LCD monitor

Flat panel monitors are based on LCD (liquid crystal display) technology. They are smaller in size and use less energy than a standard CRT (cathode ray tube) monitor. Cathode ray tube (CRT) monitors are a common type of monitor. ... Inside a color CRT, three electron guns shoot streams of electrons at the screen.

                         

Differences Between RAM & ROM

Data in RAM is not permanently written. When you power off your computer the data stored in RAM is deleted. ROM is a type of non- volatile memory. Data in ROM is permanently written and is not erased when you power off your computer.

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Difference between netbooks and laptop srelates

The first notable difference between netbooks and laptop srelates to their size. ... Netbooks like the Asus Eee PC, the HP Mini 1000, or the Acer Aspire One have much smaller screens. A netbook's screen is usually seven to 10 inches in diameter, while the typical weight of a netbook is two or three pounds.

This PS/2 USB Adapter converts

This PS/2 USB Adapter converts a single USB port into two universal PS/2 ports, letting you connect any PS/2 peripheral (e.g. mouse, keyboard) to a computer through USB.

Supporting plug and play installation, the PS/2 USB adapter offers a cost-effective way to bridge legacy PS/2 peripherals with a more modern, USB-capable computer.

HARDWARE DETAILS ASSEMBLING AND BOOTING OR REVISING A OPERATING SYSTEM FOR COMPUTER

HARDWARE DETAILS ASSEMBLING AND BOOTING OR REVISING A OPERATING SYSTEM FOR COMPUTER

This is the worst case, overcautious, sure fire approach. If you live somewhere without high humidity, please take any necessary anti static precautions. Prepare a nice clear table, or other workspace, and clear the room of any small animals, children or other such objects Installation procedure assumes that the case may be less than ideal, and some juggling is required. If you have a case that isn't designed by the lowest bidder, you may get away with less dry fitting. The smaller the case, the more planning may be needed.

Read the manual. Many DIY motherboards come with a schematic or sticker which shows what and where various connectors go. Confirm you know where these are on the motherboard, and check to see their counterparts from the case, and other components. Take note of the polarity of any LEDs.

PC HARDWARE SUPPORT SKILLS

              PC HARDWARE SUPPORT SKILLS

    Identification, installation and troubleshooting of processors

     Identification, installation and troubleshooting of Memory

    Identification, installation and troubleshooting of Motherboards

    Identification, installation and troubleshooting of SMPS

    Storage systems [ IDE and SATA ]

    Storage systems – removable [ CD/DVD/Blue Ray ]

    Display devices and graphics card

    Peripherals and input devices [

Universal Serial Bus {USB}

The term USB stands for "Universal Serial Bus". USB cable assemblies are some of the most popular cable types available, used mostly to connect computers to peripheral devices such as cameras, camcorders, printers, scanners, and more.