By Lundh F.
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Best electronics: radio books
SynopsisThis complete examine advisor completely covers the CompTIA RFID+ examination, the one certification provided for radio frequency identity (RFID), the know-how that's quickly rising in popularity and is anticipated to fully substitute bar codes. Your examine will specialize in interrogation region fundamentals, trying out and troubleshooting, criteria and rules, tag wisdom, layout choice, set up, web site research, RF physics, and RFID peripherals.
The e-book presents an outline of the interesting spectrum of semiconductor physics, units and functions, awarded from a historic standpoint. It covers the advance of the topic from its inception within the early 19th century to the hot millennium. Written in a full of life, casual variety, it emphasizes the interplay among natural clinical push and advertisement pull, at the one hand, and among simple physics, fabrics, and units, at the different.
Negli ultimi anni si è assistito a un crescente interesse in line with l’identificazione dei prodotti mediante radiofrequenza, sia nella produzione sia nella distribuzione. L’adozione della tecnologia RFID (Radio Frequency identity) apporta infatti alle aziende indubbi vantaggi economici, e anche nel settore alimentare si stanno iniziando a comprendere le nuove opportunit� strategiche e di gestione della filiera offerte dai sistemi RFID.
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Extra info for An introduction to Tkinter
Highlightbackground, highlightcolor color Controls how to draw the focus highlight border. When any child to the frame has focus, the border is drawn in the highlightcolor color. Otherwise, it is drawn in the highlightbackground color. The defaults are system specific. highlightthickness distance The Grid geometry manager puts the widgets in a 2-dimensional table. The master widget is split into a number of rows and columns, and each “cell” in the resulting table can hold a widget. The grid manager is the most flexible of the geometry managers in Tkinter.
Fill color The color to use for the text. If an empty string is given, the text is not drawn. Default is empty (transparent). font font justify constant stipple bitmap tags tuple One or more tags to associate with the text. If only a single tag is to be used, you can use a single string instead of a tuple of strings. 67 Copyright (c) 1999 by Fredrik Lundh 68 Review Copy. Do not redistribute! 1999-12-01 22:15 Chapter 21. The Canvas Window Item Chapter 22. The Checkbutton Widget The Checkbutton widget is a standard Tkinter widgets used to implement on-off selections.
Scrolls the widget contents according to the given mouse coordinate. The contents are moved 10 times the distance between the scanning anchor and the new position. xview(MOVETO, offset) yview(MOVETO, offset) dchars() FIXME Adjust the canvas so that the given offset is at the left (top) edge of the canvas. 0 the end. These methods are used by the Scrollbar bindings. 2 and earlier. For compatibility, use the string “moveto” instead. icursor() FIXME xview(SCROLL, step, what) yview(SCROLL, step, what) index() ⇒ integer Scroll the canvas horizontally (vertically) by the given amount.