What is Joystick and Types of Joysticks

A joystick is an input device, connect to your computer using a USB or serial port. Some older devices require a serial port connection, nowadays most of these devices connected by USB ports. Joysticks are often used to control the movements of objects displayed on the computer screen. Mostly PC games can be played with keyboard and mouse. But a serious gamer, these devices are not sufficient so most gamers like joystick, a great joystick gives...

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What is Webcam and How it work

The term webcam is usually used for Web and Video Camera. Also called PC Cameras that are connected into your computer by a USB port. You can connect a webcam to your computer directly for use in online video chat sessions with other people or for online meetings. In 1991, the first webcam was introduced Cambridge University Computer Science Department. Generally most webcams capture a still image only, while other webcams capture streaming...

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What is Plotter and How it Work

A plotter is a device produce outputs containing graphics or diagrams. A plotter similar to a printer allows you to print larger size images and also used for graphical output such as financial documents, engineering and architectural designs to produce high quality drawings. It also used as in CAD (Computer Aided Design) packages, create flowcharts and large size posters. ...

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What is Digitizer and How it Work

Digitizer (also known as Drawing Tablets, Graphics Tablets and Digitizer Tablets) is a graphical input device that convert analog documents, graphic, picture, maps and other data into digital form which can be sent to the computer for processing and storage in memory. It is also called pointer device or optical device. An example of digitizer is a Graphic Tablet. This input device is very useful when drawing large drawings, maps etc, and also...

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What is UPS and Types of UPS

Definition of “Uninterruptible Power Supply”.  UPS is a device that provides temporary power supply to computer should the electricity fail and it protects the data on the computer from being if the power source is lost. When power fail or fluctuation occurs, a UPS intercepts the fluctuation so that it doesn't damage your personal computer. It enables you to shut down the computer properly to avoid without losing or lost any data. Generally,...

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What is Modem and Different Types of Modems

Short for “MODulate/DEModulate”. A digital signal is converted to analog form is known as modulation and analog signal is converted to digital form, is known as demodulation. The modem converts digital signals into analog signals that can be sent along telephone lines. A modem is a device that connects your computer to the Internet that sends and receives computer information over a telephone line or cable. To connect your computer to...

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What is Read Only Memory (ROM) and Types of ROM

Stands for Read Only Memory. It is built into the computer. ROM is non-volatile and only permits the user to read data. ROM performs the read operation only does not have a write capability which means we cannot store any new information into ROM. An example of a BIOS (Basic Input Output Systems) chip are permanently loaded during the manufacturing time. ROM holds instructions for starting up the computer. The data does not get erased...

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What is Random Access Memory (RAM) and Types of RAM's

RAM stands for Random Access Memory. It is also known as read/write memory, main memory and primary memory. RAM is a temporary memory it stores data temporarily and once the power is switched off, the information in the RAM is lost. Information that is stored permanently is written to the hard drive. So RAM is known as volatile memory. Volatile means the information is lost when the computer is switched off or when power fails. RAM is measured...

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What is Scanner and Different Types of Scanners

Scanner is an optical device that optically scans documents, images and printed text convert it into a file format or digital format that may be used in the personal computer. You can use the scanner with special software to read text. When used an optical character recognition software, a scanner can convert printed, handwriting text into a digital file format that can be read by a word processor. The common types of optical scanner devices...

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What is Printer and Types of Printers

It is an important output device which can be used to print a document from a computer. It transfers data from a computer on to paper. A document created on a computer you can send it to a printer for a printout. There are different types of printers depending on their speed and approach of printing. The speed of the printer is rated either pages per minute (PPM) or characters per second (CPS). Most of the documents are printed on...

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What is CPU (Processor) and Different types of CPU

CPU (Processor) : CPU (Central Processing Unit) also known as a Processor and it attached to the motherboard. The processor or CPU (Central Processing Unit) is the main processing unit of a computer or main unit inside the computer. CPU controls all internal and external devices, performs arithmetic and logic operations. It is just like brain that takes all major decisions, makes all sorts of calculations and directs different...

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What is Motherboard and Parts of a Motherboard

Motherboard is the Central Printed Circuit Board (PCB) of modern computers. It is one of the main part of a computer and allows the CPU, RAM and all other computer components to function with each other. All computer components attached to the motherboard, it contains the connectors for attaching additional boards and other peripherals like ports, expansion slots, and memory chips that control functions like video and networking. All the main...

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What is Hard Disk and Types of HDD

The Hard drive also called the hard disk or fixed disk. This is the main storage for a computer and Non-volatile storage device. Every computer has a hard disk they are used to store the data files. Computers store information in two locations, First one, the computer’s RAM is used as a temporary storage location since whatever it contains is lost when the computer is powered off and Second one, Information that is stored permanently is written...

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