iTechGlance : Discover the world of Technology

What is Joystick and Types of Joysticks

19:20 Games, Input Device, Joystick, USB No comments

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 you more fun and full real life experiences. Generally they are best suitable for flight simulators, action and driving games.

What is Webcam and How it work

08:51 Camera, Capture, Chat, Internet, PC Camera, Streaming, Video, Web, Webcam No comments

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 video also. Webcams typically come with software to edit/record those movies and record video or video streaming on the internet (web).

What is Plotter and How it Work

09:22 Architecture, CAD, Computer Aided Design, Design, Diagrams, Drawing, Engineering, Flowchart, Graphics, Plotter, Posters No comments

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.

What is Digitizer and How it Work

07:11 CAD, Computer Aided Design, Device, Digitizer, Drawing, Geographic, GIS, Graphics, Maps, Optical, Picture, Pointer, Screen, Tablets No comments

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 great time savers when entering data into CAD (Computer Aided Design) programs. Digitizer generally used in Auto CAD (Computer Aided Design) and Geographic Information System (GIS) applications.

A digitizer consists of a flat glossary surface and a pointing device similar to a pen, when the pointing device moves across the glassy surface a pointer on the screen moves according to the pointer device movements. We can draw picture/image/map or select an application by pressing the pointing device and moves it according to the picture.

What is UPS and Types of UPS

23:21 Data, Line Interactive UPS, Offline UPS, Online UPS, Protect, Uninterruptible Power Supply, UPS No comments

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, UPS can provide the computer power for 5 to 20 minutes depending on different types of models.

UPS basically three types:

(1) Online UPS
(2) Offline (Standby) UPS
(3) Line-Interactive UPS

Different Types of UPS with Pictures

Online UPS

Offline (Standby) UPS

Line-Interactive UPS

What is Modem and Different Types of Modems

07:39 ADSL, Analog, Cable, Demodulate, Demodulation, Dial up, Digital, DSL, Fax, GPRS, Modem, Modulate, Modulation, SDSL, Signal, Telephone, Wireless No comments

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 the Internet, you need a modem. Generally internal modem can handle speeds up to 56 Kbps (kilo bits per second) or 56000 bits per second. Most of the 56kbps modems are used in a dialup connection.

Nowadays there are different types of modems available in the market.

1.    Internal Modem
2.    External Modem
3.    Dial up Modem
4.    Analog Modem
5.    Cable Modem
6.    Fax Modem
7.    USB Modem
8.    Wireless Modem
9.    GPRS Modem
10. DSL (Digital Subscriber Line) Modem
11. ADSL (Asymmetric Digital Subscriber Line) Modem
12. SDSL (Symmetric Digital Subscriber Line) Modem

List of Different Types of Modems with Pictures

Internal Modem