Television is an amazing window into the world. At the flick of a button, you can travel from the North Pole to the Serengeti, watchmen...

HOW DOES AN LED DISPLAY WORK? An LED display consists of many closely-spaced LEDs. By varying the brightness of each LED, the diodes...

HOW LCD DISPLAYS WORK? Liquid-crystal display (LCD) is a popular type of technology used in electronic displays. As the name suggests,...

A touchpad or trackpad on laptops is a pointing device with a tactile sensor that allows you to control the cursor or mouse pointer to...

WHAT IS A MODEM? A modulator-demodulator, or simply modem, is a computer hardware device that converts data from a digital format into a...

Flat-Panel Devices are devices that have less volume, weight, and power consumption compared to Cathode Ray Tube (CRT). Due to the...

The Blu-ray Disc (BD), often known simply as Blu-ray, is a digital optical disc storage format. It is designed to supersede the DVD...

The CMOS battery is alternatively referred to as an RTC (real-time clock), NVRAM (non-volatile RAM) or CMOS RAM, CMOS is short for...

WHAT IS AN TUNER CARD? A TV tuner card is a kind of television tuner that allows television signals to be received by a computer. Most TV...

What is a system bus? A system bus is a facet of computer architecture that transmits and shares data throughout the computer and between...

What is a Heat Sink? A heat sink is a component that increases the heat flow away from a hot device. It accomplishes this task by...

POWER SUPPLY A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a computer....

What is an optical disk? An optical disk is an electronic data storage medium that can be written to and read from using a low-powered...

WHAT IS A SCANNER? A scanner is a device usually connected to a computer. Its main function is to scan or take a picture of the document,...

WHAT IS A PROJECTOR? A projector is an output device that takes images generated by a computer or Blu-ray player and reproduces them by...

WHAT IS A JOYSTICK? A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the...

WHAT IS NIC? NIC (network interface card) is a gadget that works as a bridge between computers. In other words, this piece of equipment...

WHAT IS A USB FLASH DRIVE? A flash drive stores data using flash memory. Flash memory uses an electrically erasable programmable...

WHAT IS A SOUND CARD? Sound Card is an expansion component used in computers to receive and send audio. Sound Cards are configured and...

What is Webcam? A webcam is a video camera that feeds or streams an image or video in real time to or through a computer network, such as...