A quiet revolution is taking place. Over the past few years, the density
of the average programmable logic device has begun to skyrocket. The
maximum number of gates in an FPGA is currently around 500,000 and
doubling every 18 months. Meanwhile, the price of these chips is
dropping. What all of this means is that the price of an individual NAND
or NOR is rapidly approaching zero! And the designers of embedded
systems are taking note. Some system designers are buying processor
cores and incorporating them into system-on-a-chip designs; others are
eliminating the processor and software altogether, choosing an
alternative hardware-only design.
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