[Open-graphics] Some basic logic gates

Josephblack josephhenryblack at gmail.com
Tue Nov 6 23:11:41 EST 2007


On 07/11/2007, Patrick McNamara <wpmcnamara at yahoo.com> wrote:
> Timothy Normand Miller wrote:
> > I don't actually know what they mean by "buffer" and "driver".  I
> > usually think of a buffer as being a register, and a driver as
> > something that drives an output pin.
> In this sense, a buffer is something that separates input from output.
> Same functionality as a register but not clocked.  An AND gate with its
> two inputs connected would be a buffer.  So would two inverters in
> series.  7406s are general called hex inverting buffers or
> buffer/drivers.  The driver part comes from the transistors on the
> output being able to source or sink much higher current.  This can be
> either for a large fan out, or for driving non digital logic such as an
> LED.  The driver on an FPGA pin is analogous.
> snip
> Patrick M
>

added to the glossary.. buffer, frame buffer, and FIFO. Proof readers welcome.
http://wiki.opengraphics.org/tiki-index.php?page=Glossary


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