Many companies have copied the Cherry switch design and use the same cross-shaped stem to make keyboards and keycaps interchangeable.Ĭlicky: the audible “click” sound made from a switch. Cherry MX switches are available in different “colors” which correspond to different switch features and resistances. Cherry-style switch manufacturers include Gateron, Kailh, and Zeal PC (Zealio).Ĭherry MX switch: the de facto standard key switch type for modern mechanical keyboards, developed by German company Cherry in the 1980s. Buckling spring switches inspired modern key switch designs, but are not actually used on most keyboards, except the legacy models still sold by Unicomp.Ĭherry clone: a switch designed to match the Cherry MX style, but manufactured by another company. Rubber dome keys usually require a full bottom out to activate.īuckling spring switch: a relatively simple and old-fashioned spring switch first designed by IBM, and made famous by the Model M keyboard. Mechanical keys actuate before bottoming out, meaning it’s possible to type faster and with less force (though some heavy typists still do so). Alps uses a rectangular stem incompatible with other keycaps.īottom out: the act of pressing a key to its full depth. Like the more popular Cherry MX switches, many different actuation and tactility options are available in Alps style, and many “Alps-like” and “Alps-clone” switches have been made. Heavier switches take more force to press down.Īlps switch: an alternative switch style that dates back to the 1980s. Different key switch designs allow for different levels of actuation force, measured in grams. Therefore, the points provide an independent accuracy assessment of the math model.Actuation force: the amount of pressure needed to depress a key and register a keypress. OrthoEngine calculates the difference between the position of the points and the position determined by the model, and includes the error in the residual report. When you change the point to an independent check point or make it inactive, the point is removed from the math-model calculation, but retained in the project. If the point is a GCP, and you want to change it an independent check point, click Change to Check Point, as applicable.To make the point inactive, in the first column of the table, clear the check box.To remove the point from the project, click Delete Point.If the point is still unacceptable, in the Residual Errors window, consider doing one of the following:.If the point is unacceptable, select the same point in the table, click Edit Point, and then repeat steps 1 to 4. In the Accepted Points table, verify the results.In the GCP Collection or Tie Point Collection window, as applicable, under Working Image, click Accept.In the viewer, click the new location of the point, and then on the toolbar, click Use Point.In the table in the Residual Errors window, click the row with the point you want to edit, and then click Edit Point.To understand how to evaluate the points in your project, see Troubleshooting the math model solution. Residual errors are the difference between the coordinates that you entered for the ground control points (GCPs) or tie points and where the points are according to the computed math model. The residual report contains the residual errors of the points in your project.
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