Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 30,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 

Computer Interfaces  Page 13d
Computer Interface: 
#         A-B          C          D-E            F-H             I        
J-L         M          N-O           P-Q          R          S           T-U           V-Z   
Last Updated on: Tuesday, April 01, 2014 04:31 AM
 

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
USB-AVR 323 Board -  schematic for an ATMega323 boards The main interface to this board is USB via the FTDI USB-Serial converter chip (8/05)
USBn9603/4-Increased Data Transfer Rate using Ping-Pong Buffering -  National Semiconductor Application Note  (app note added 6/06)
USB-PC 8-Ch Power Switch -  PowerSwitch provides 8 bits of parallel output intended to switch e.g. the power supply to electronic devices. The PowerSwitch firmware is accompanied by a command line tool for Unix to control the device. (The command line tool can also be compiled on Windows using minGW and libusb-win32.) ….(electronic schematic added 11/08)
Use a microcontroller to design a boost converter -  4-Mar-04 Issue of EDN  Boost converters, like other switchers, have traditionally received their control signals from a dedicated circuit. However, a recent trend is to integrate simple switching-power-supply building blocks into generic devices, such as microcontrollers..... [Design Idea by Ross Fosler, Microchip Technology, Chandler, AZ]
Use a PC 's parallel Port to program a clock source -  12/07/04 EDN-Design Ideas This Design Idea shows how you can use Linear Technology's LTC6903 programmable oscillator as a clock source for direct-digital synthesis, data conversion, switched-capacitor filtering, clock, and voltage-controlled oscillator circuits. The LTC6903 operates from 2.7 to 5.5V with modest power consumption and can produce clock signals at frequencies of 1 kHz to 68 MHz.... [Design Idea by William Grill, Honeywell BRGA, Lenexa, KS]
Use a PC 's printer Port to measure frequency -  10/26/95 EDN-Design Ideas  You can plug the circuit in Fig 1 into a PC's printer port to measure frequency. The circuit needs no external power supply, measures frequencies from 1 Hz to 5 MHz, and displays the results on screen. IC1 (CD4536) is a 16- or 24-bit programmable counter. In this application, you set the counter to 16 bits. IC2 is a 12-bit counter; you use only the first 4 bits. The combination of IC1 and IC2 yields a counter with a total length of 20 bits.... [Design Idea by Yongping Xia, EBT Inc, Torrance, CA]
Use a PC to Record Four Channel Waveforms -  05/25/00 EDN-Design Ideas This design idea is a sequel to a previous one, "Use a printer port to record digital waveforms," EDN, June 18, 1998, pg 136. Both ideas are similar: Use the PC's printer port to sample waveforms, and use the PC's memory to store data. The technique presented here expands the capability to four channels…. [Design Idea by Dean Chen, Dycam Inc, Chatsworth, CA]
Use a PC's printer Port to measure frequency -  26-Oct-95 Issue of EDN  You can plug the circuit in Fig 1  into a PC's printer port to measure frequency. The circuit needs no external power supply, measures frequencies from 1 Hz to 5 MHz, and displays the results on screen. IC1 (CD4536] is a 16- or 24-bit programmable counter. In this application, you set the counter to 16 bits.... [Design Idea by Yongping Xia, EBT Inc, Torrance, CA]
Use a PIC for automatic baud rate detection -  22-Aug-02 Issue of EDN  Automatic baud-rate detection is desirable in many applications. Microchip's (www.microchip.com] standard USART module that the company embeds in most of its PIC microcontrollers lends itself to a simple and easily implemented automatic baud-detection scheme. The PIC18FXX2 data sheet defines the following baud rate in bits per second  where X is the value for the baud-rate generator and FOSC.... [Design Idea by Ross Fosler, Microchip Technology, Chandler, AZ]
Use a Printer Port to Record Digital Waveforms -  6/18/98 EDN-Design Ideas  To record or capture special waveforms, those that appear once or have no fixed frequency, the usual technique is to use a logic analyzer or a storage oscilloscope. However, these tools are very expensive. Moreover, because of limited memory, a storage scope can record fewer than 1000 samples. The....scroll to find this circuits.... [Design Idea by Dean Shen, Dycam Inc, Chatsworth, CA]
Use a system's real time clock to hide a code sequence -  27-Oct-05 Issue of EDN  Keep key code sections protected from prying users.... [Design Idea by Mihaela Costin, Delmhorst Instruments, Towaco, NJ; Edited by Brad Thompson and Fran Granville]
Use power-line for baud-rate generation -  16-Aug-01 Issue of EDN  One cost-saving measure associated with 8-bit embedded microcontrollers is to use a resistor-capacitor oscillator. These RC oscillators are inexpensive, but the trade-off is low stability with temperature and voltage. In many applications, the low cost of an RC oscillator is alluring, but the application requires a stable clock source for baud-rate generation or event timing.... [Design Idea by Joseph Julicher, Microchip Technology Inc, Chandler, AZ]
                 Next T-U's          Previous T-U's

Computer Interface:  #         A-B          C          D-E            F-H             I        
J-L         M          N-O           P-Q          R          S           T-U           V-Z   



HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Contact Info


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  2002 - 2013 David A. Johnson & Associates.  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.