PC Serial Port Receiver

  

Rating: 0.00 / 5 
Inside:
PC Circuits / Computer Circuits
This circuit was designed to control a 32 channel Christmas light show from the PC serial port. Originally designed with TTL logic, it has been simplified using CMOS circuits to reduce component count. It is a fairly simple, reliable circuit that requires only 4 common CMOS chips (for 8 outputs), an optical isolator, and a few discrete components. The schematic diagram (SERIAL.GIF) illustrates the circuit with 16 outputs which can be expanded with additional 8 bit shift registers. visit page.
PC Serial Port Receiver - schematic


News


  • New York Times
    New York Times To this end, the 10-person executive team includes a chief officer named Amanda Parkes, a 41-year-old scientist and mechanical engineer with long blond hair who talks at warp speed, has a thing for biofaication, and tends to
     30 April 2016
  • The New Yorker
    The New Yorker Although Shannon worked largely with analog , he also has some claim as the father of the digital age, whose ancestral ideas date back not only to his 1948 paper but also to his master's thesis, published a decade earlier. The
     30 April 2016
  • Texas Tribune
    ... the basic EMP threat goes like this: If a nuclear missile is detonated in outer space above North America, it would release a shockwave of electricity that would fry grid-wide — triggering mass chaos in a country left without cell pho
     29 April 2016
  • California Lawyer
    California Lawyer Mr. Marino has experience in a variety of areas, including networks, telecommunications, software engineering, e-commerce, entertainment and internet-related , architecture, digital design, parallel Fish & Richardson
     29 April 2016
  • Pacific Business News (Honolulu)
    Pacific Business News (Honolulu) A Hawaii judge denied an Oahu plant nursery's motion to stall the state health department's medical marijuana dispensary license announcement a day before the state was set to announce the names of the first f
     29 April 2016
  • Virginian-Pilot
    Virginian-Pilot Klink did not immediately identify the " problem" that led the audio equipment in one interview room to iefly stop recording during two separate interviews. She also declined to ... A follow-up hearing is scheduled for May 18
     29 April 2016
  • Columbus Business First (blog)
    Columbus Business First (blog) King Memory LLC did not hit an aggressive sales goal to nearly triple in 2015 – and that was a good thing for the company's future, CEO Darryl Tanner says. Credit lines expanded in the past month by Amazon
     29 April 2016
  • Phys.Org
    Phys.Org "Also, the error correction is fully passive—unwanted error states are quickly repaired by engineered dissipation, without the need for an external to watch the and make decisions. While this paper is a theoretical blueprint,
     29 April 2016
  • IPWatchdog.com
    IPWatchdog.com In early April, Qualcomm announced that it had entered into a licensing agreement with British vehicle systems developer Ricardo to commercialize Qualcomm's Halo wireless electric vehicle charging (WEVC) as a charging system f
     29 April 2016

.


Leave Comment

characters left: