A keyboard is a higher version of typewriter. It uses a particular arrangement of keys or buttons to function as electronic levers/switches. Different types of keyboards function for inputting data, difference lies in their upgrades.
A mouse is a pointing device that gives commands by selecting functions from displayed screen. It functions by detecting two dimensional motions relative to its supporting device.
Both
keyboard mouse are equally important for using the computer. In fact a computer is an assembly of different operational parts, all of which work together to provide the desired results for the user.
Keyboards are classified on the basis of functional keys, connectivity, layout and special category. As for functional keys, keyboards differ from each other due to presence of multimedia keys in one, and their absence in another. Different models and make of keyboards function with same efficiency.
Connectivity also classifies keyboards into three categories: Bluetooth, Infrared and radio Frequency. Bluetooth keyboards use Bluetooth technology therefore they have higher range of activity as compared to infra red and radio frequency keyboards. Infrared keyboards are in line of sight of receiver. Radio frequency keyboards have greater mobility as compared to other two as they derive their energy from USB cable or batteries to charge them. All these keyboards require extensive keyboards to be installed in them.
The cheapest keyboard available in the market is wired keyboard. They use either USB or PS/2 connection. They are usually “plug and act” keyboards. These keyboards are generally low in prices as compared to other keyboards.
Virtual keyboards are used in PDA. They are not virtual keyboards, but are simulated using software.
Different types of computer mice are also available in the market. They work to provide easier operations and have become multifunctional exhibiting unmatched precision and seamless wireless connectivity. Gaming mice, optical USB multicolor mini mice, cordless mice, laser mice are some of the different types of mice that are available for use.
Logitech, Alto, Trust are some of the good Companies which have come out with their technologically advanced keyboards, mice and other computer accessories.
Visit the site www.homeshop18.com to purchase these accessories as per space available, type of usage and other needs of computer user.
Author suggests you to purchase computer hardware’s like keyboard mouse,
pen drive, hard disk drives, laptops accessories,
lcd monitors, headphones and many more.
