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A keyer is an electronic device used for signaling by hand, by way of pressing one or more switches. [1] The technical term keyer has two very similar meanings, which are nonetheless distinct: One for telegraphy and the other for accessory devices built for computer-human communication:
Overhead view of DataHand units that provide full computer keyboard and mouse functionality The right-hand of a Professional II keyboard [1]. The DataHand is an unconventional computer keyboard introduced in 1990 by DataHand Systems, Inc., designed to be operated without any wrist motion or finger extension.
Switch name Stem design Switch type Click type Initial force Actuation force Spring force Actuation point Total travel Mounting type Factory lube SMD LED compatibility Key stroke lifespan Drop x Invyr Kailh Holy Panda [22] MX Type stem Tactile N/A 67 g 67 g 67 g 1.2 mm 4.0 mm Plate mounting No Yes 80 million Drop Kailh Halo True [23] MX Type stem
The "LeSabre 400" option package included a 280-horsepower 350 four-barrel V8 with 10.25 to 1 compression and three-speed Super Turbine 400 automatic transmission. The "Switch-Pitch" torque converter used in conjunction with the Super Turbine automatic transmission was discontinued in favor of a standard torque converter.
Blue on oval, ULC, LLP (2003) Lexmark, IBM UK, Unicomp 1995-96 (Lexmark), 1995-99 (IBM UK), ?-2003-? (Unicomp) Lexmark International Inc. 1984 / none (IBM UK) One of the final Lexmark-made part numbers. A 2003 model made by Unicomp for IBM also exists with the IBM logo on the lock light panel in the usual Unicomp lock light panel style. 42H1292U
2003: PC: No — 3-axis joystick, 12 buttons (one in trigger position), 4-way hat, throttle: No: Buttons 1-6 are located on stick with 2-5 being accessible to thumb in normal holding position, throttle slider is easily held by the thumb when fingers of left hand are placed over buttons 7-12: Freedom 2.4 Cordless 2002: PC: RF 2.4 GHz: 3×AA
The two buttons below the keyboard act as a computer mouse: the top button is used for left-clicking while the bottom button is used for right-clicking. Optical pointing sticks are also used on some Ultrabook tablet hybrids, such as the Sony Duo 11, ThinkPad Tablet and Samsung Ativ Q.
The main features dropped were Z-axis control and the 8-way hat switch. Otherwise the differences were cosmetic, including shrinking the base, moving the throttle to the front of the base, and replacing 2 of the rounded buttons on the stick with more rectangular buttons. Support for this joystick was dropped with the advent of Windows XP.