The above Ad will no longer appear after you Sign Up for Free!

shift register

Discussion in 'Wiki' started by derekleffew, Jun 22, 2009.

  1. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

    Likes Received:
    Las Vegas, NV, USA
    A shift register is a serial/parallel converter. There are two common types.

    Serial in, Parallel out - data is clocked in on two lines (data, clock) one bit at a time. Once all bits are there, it gets passed on to the parallel outputs all at once. This is often used as an output I/O expander for a processor to save pins. One common use is driving LEDs or 7-segment displays.

    Parallel in, Serial out - this is the other direction. The parallel inputs get looked at all at once, and the output gets shifted out to the processor on the 2 lines one at a time. This can serve as an input I/O expander. One common use is to read switches, such as a DMX address switchpack.
    Last edited by a moderator: Jun 22, 2009

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice