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Keyboards have come a long way since the days of the early computers. There have been two major revisions of the form factor of keyboards. First there was the XT keyboards and then came the AT keyboards. All the keyboards that are in use now are basically built around the AT standard keyboard. There are a few basic differences between the two. Some extra keys were added from the original 83-key XT layout. Additionally there are several other standards, the most common being the iMac keyboard layout. Along with the layout of the keyboards, there have also been several changes with the physical attributes. The most common port for keyboards until a few years back has been the PS/2 port. With the arrival of USB variants, they are falling out of favor. Most wireless keyboards are connected through an USB port. Wireless keyboards have been in the scene for the last couple of years. Along with it, there are several other weird varieties of keyboard, flexible silicon keyboards being one such. There is also a type of optical keyboard that is available. But compared to these, a wireless keyboard actually has some advantages. One the biggest is the ability to use the keyboard away from the monitor. Wireless keyboards have gained considerable popularity of late due to their practical usefulness. One of the disadvantages is the requirement of external power source. Batteries are required to power them. There is usually a receiver that is connected to the computer that receives the signals from the keyboard to the PC. A wireless keyboard is convenient for those users who have a limited space and wants to reduce the clutter of wires. Although wireless keyboards cost a lot more than normal wired ones, their prices are gradually decreasing. The Rapoo 1900 PC Desktop Wireless Keyboard and Mouse Suit Kit offers an affordable solution. It comes bundled with a wireless mouse. It is ideal for laptops and PCs. It has a good range and is quite reliable. The sleek design gives it a trendy look. It works on all major operating systems. The mouse requires a single 1.5V AA cell while the keyboard requires a 1.5V AAA cell. The receiver is powered by the USB port. The devices work best within 10 meters from the receiver. The Rapoo 1900 PC Desktop Wireless Keyboard and Mouse Suit Kit is priced at $ 39.45.
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