PLC Programming

Serial port connection to PLCs Programmable Logic Controllers (PLCs) are a specialized variety of computer typically used for controlling machinery on assembly lines and other systems needing mechanical and electrical robustness. They provide industrial-grade levels of immunity to electrical noise, precisely deterministic timing, and the ability to operate in a wide range of temperatures. They […]

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PCI & PCIe Riser Cards

In a server room, space is at a premium. As a consequence, the hardware is placed in racks of a standardized width and height, with a standardized spacing between mounting points along the racks’ vertical mounting rails. What has evolved are computers designed with correspondingly specific heights and width/s, to fit this storage and mounting […]

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Photo Printing Kiosk

When Kodak was designing its photo kiosks it found the need for numerous input and output interfaces, as the kiosks were equipped with variety of card slots, printers, and other I/O. In one kiosk variant or another, they included CompactFlash™, SD/SDHC/SDXC™, microSD, Memory Stick, Mini SD, xD-Picture Card™/SCM, MS DUO, SmartMedia™, and MultiMedia/RSMMC card readers; […]

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Raspberry Pi serial interfacing

The Raspberry Pi, the single-board computer that has been causing so much excitement lately, has actually got two serial ports. One is a “mini-uart” with interfacing built into the Raspberry Pi’s GPIO (General Purpose Input-Output) interface. The GPIO interface is a pin header, and the relevant serial port pins are as shown:   The Raspberry […]

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