According to a report from the US science and technology blog Macrumors, Apple plans to carry out promotional activities at its retail stores and on the Internet this week on “Black Fridayâ€. "Black Friday" is the day after Thanksgiving, marking the official start of the American holiday shopping season. The report said that a special message on the Apple Australia website indicated that the company will carry out this activity. This information does not include details on which products will be discounted and how much they will be discounted, but the list of discounted products will usually be leaked out a few days before the sale. In last year's sales activities, Apple reduced the iPad 2 by $41 to $61, and laptops and desktops by $101.
This promotion is noteworthy because it is usually Apple's only one-year discount for new products or recently released products. Apple just updated most of its product categories last month, while launching the iPad mini, the new Mac and the 13-inch MacBook Pro, and surprisingly the fourth-generation iPad.
Like last year, Apple's promotion will only last 24 hours. It will begin at 2:01 local time on November 23 and close at 1:59 the next day. With "Black Friday" approaching, Apple should announce this activity in other markets such as Europe.
The first Programmable Logic Controllers were designed and developed by Modicon as a relay re-placer for GM and Landis
These controllers eliminated the need for rewiring and adding additional hardware for each new configuration of logic.
The new system drastically increased the functionality of the controls while reducing the cabinet space that housed the logic.
The first PLC, model 084, was invented by Dick Morley in 1969.The first commercial successful PLC, the 184, was introduced in 1973 which was designed by Michael Greenberg.
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