Digital Input Board

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  • 1-GHz Mobile Digital Data Recorder Exploits Latest Advances
    Just 5 years ago, it was unthinkable that a mobile system could perform sustained recording at the 2 Gbyte/s rate needed for a 1-GHz recorder. Virtually all such recorders used limited amounts of on-board memory to provide a few seconds of snapshot recording. However, digitizer boards have greatly
  • Care and Feeding of the PIC16C74 and Its Peripherals
    A/D value may float around. The second trimpot is only used to show a method of changing A/D input pins. If you are using the PICDEM 2 board, then the LED and a current limiting resistor must be connected to the PWM output. When the program is run, the RS-232 terminal will display two A/D values
  • Brushless DC Motor Control Using PIC18FXX31 MCUs
    A PICDEM TM MC demo board was used to develop, test and debug the motor control code. The PICDEM MC has a single-phase diode bridge rectifier, converting AC input to DC and a power capacitor bank that keeps a stable DC bus. A 3-phase IGBT-based inverter bridge is used to control the output voltage
  • Using the MCP320X 12-Bit Serial A/D Converter with Microchip PICmicro (R) Devices
    The MCP320X devices comprise a family of 12-bit successive approximation Analog to Digital (A/D) Converters. These devices provide from one to eight analog inputs with both single ended and differential inputs. Data is transferred to and from the MCP320X through a simple SPI (R) -compatible 3-wire
  • Weigh Scale Applications for the MCP3551
    and the -Input terminals of the load cell). bridge. Strain gauges are one such sensor. As a The goal is to develop a variety of circuits that can material is strained, there is a corresponding change in quantify this change via an analog-to-digital converter resistance. In many cases, each side
  • Case Study: Prosilica GigE Vision Cameras Tested for New NASA Recording System
    board; a high-speed, 320-Gbyte flash memory system; and an I/O subsystem that provides interfaces to multiple cameras, along with analog and digital inputs.
  • Customer Spotlight - Relio TM Emergency Communications
    rackmount design provides all required functionality. The system shares the 933 MHz single board computer used in the standard 2U Relio with the additional I/O built onto a custom PCB that also includes the DC/DC power supply circuit required for the customer's 9-36 VDC input range. The serial
  • Interfacing a 4x4 Matrix Keypad with an 8-Bit GPIO Expander
    interrupt output pin inputs / outputs (I/O's) are needed. It is best to think of (INT), which, if enabled, will activate when an input pin an 8-bit GPIO Expander like adding another 8-bit wide (GP7-GP0) changes state. This is known as Interrupt- digital port to the MCU. on-change and can be configured

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