[Open-graphics] Some basic logic gates
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.
> Patrick M
added to the glossary.. buffer, frame buffer, and FIFO. Proof readers welcome.
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