Logitech MX Revolution
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The Logitech MX Revolution is a wireless, laser mouse manufactured by Logitech and released in 2006. The MX Revolution is the first mouse to feature a free-spinning scroll wheel,[citation needed] which allows continuous scrolling for several seconds with a single user action. The Logitech VX Revolution is a near equivalent product intended for laptop use.
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[edit] Features
The MX Revolution and VX revolution are wireless, USB 2.0 mice which operate on the 2.4 GHz band with an operating range of 20 - 30 ft. The mouse is powered from a non-removable, rechargeable Lithium battery (the battery is identical to the removeable battery in the G7, and the battery was simply stored in a holder rather than made removeable without opening the mouse) and includes a battery charger on which the mouse is mounted. The mouse also has four LEDs which indicate battery state, and turn red in case of critical battery. The optical sensor employs a small infrared laser with an advertised sensitivity of 800 dpi.[citation needed]
Other features include single-button web search, a document quick-flip side wheel, and ergonomic enhancements. The mouse has a total of nine buttons: left, right, middle (mouse wheel pressed inwards), another just below the middle, two buttons are activated by moving the mouse wheel left or right, two to the left side, and the last one is the left wheel which can also be pressed inwards. All of them programmable except for the right and left click.[citation needed]
During late January 2008, Logitech MX5500 was released. This package includes a Bluetooth MX Revolution, a wireless bluetooth keyboard and a bluetooth receiver which works as a bluetooth hub for other devices as well. According to Logitech's website, the keyboard seems to use AA alkaline batteries, since the package includes four.[1]
[edit] Scroll Wheel
The most significant new feature of the MX Revolution is the "hyper-scrolling" scroll-wheel, which enables the scroll wheel to spin freely for seven seconds, enabling rapid scrolling through long documents or spreadsheets. The design of the scroll wheel is a radical departure from existing scroll wheel designs. In order to maximize free-spin time, the MX Revolution employs a rubber-coated alloy wheel which weighs 14 grams, nearly seven times as much as conventional all-polymer scroll wheels.[2] In order to maintain the feel of a lighter, conventional scroll wheel, the wheel is counterbalanced by a spring-based suspension system, which also allows the travel required for push-to-click operation and horizontal scrolling.
There are three ways to toggle between normal operation and "hyperscrolling": (1) clicking the scroll wheel (alternatively, mapping the hyperscroll activation to a separate programmable mouse button achieves the same effect), (2) using included software to tie scroll wheel operation to specific applications, (3) auto-detection of rapid scrolling. The transition between the two modes of operation is controlled by an internal switch which delivers current to a small DC motor. In the conventional mode of operation, the wheel's motion is governed by the action of a small spring-mounted ratchet mechanism. When the switch is activated, the ratchet mechanism retracts, allowing a free spin for up to seven seconds. [3]
[edit] References
- ^ Logitech MX5500 Overview and specifications at logitech.com
- ^ Logitech Innovation Brief
- ^ 31 October 2006, The Engineer Online (UK) retrieved 29 Mar 2007
