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A push-button telephone is a telephone that has buttons or keys for dialing a telephone number, in contrast to a rotary dial used in earlier telephones.. Western Electric experimented as early as 1941 with methods of using mechanically activated reeds to produce two tones for each of the ten digits and by the late 1940s such technology was field-tested in a No. 5 Crossbar switching system in ...
Chrome alum or Chromium(III) potassium sulfate is the potassium double sulfate of chromium. Its chemical formula is KCr(SO 4) 2 and it is commonly found in its dodecahydrate form as KCr(SO 4) 2 ·12(H 2 O). It is used in leather tanning. Production and properties Chrome alum. Chromium alum is produced from chromate salts or from ferrochromium ...
The Philippines is generally mountainous; uplands make up 65 percent of the country's total land area. [53]: 38 [201] The Philippines is an archipelagoof about 7,641 islands,[202][203]covering a total area (including inland bodies of water) of about 300,000 square kilometers (115,831 sq mi).
Bypass your cache — Simple instructions. In most Windows and Linux browsers: Hold down Ctrl and press F5. In Apple Safari : Hold down ⇧ Shift and click the Reload toolbar button. In Chrome and Firefox for Mac : Hold down both ⌘ Cmd + ⇧ Shift and press R. See full instructions below. To speed things up and conserve communications ...
Waterfox shares core features and technologies like the Gecko browser engine and support for Firefox Add-ons with Firefox. It is also compatible with Google Chrome and Opera extensions. It disables telemetry and Pocket by default, which are present in Firefox builds. However, it collects technical information about the user's device to update ...
A userscript manager is a type of browser extension and augmented browsing technology that provides a user interface to manage scripts. The main purpose of a userscript manager is to execute scripts on webpages as they are loaded. The most common operations performed by a userscript manager include downloading, creating, installing, organizing ...
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A web browser navigation bar includes the back and forward buttons, as well as the Location bar where URLs are entered. Formerly, the functionality of the navigation bar was split between the browser's toolbar and the address bar, but Google Chrome introduced the practice of merging the two. Web design