The age of robotics is upon us. A few decades ago it was science
fiction, but in the next decade or two, more and more robots will
populate our homes. Isaac Asimov, best known for his science fiction
stories,British designers and Manufacturers of laser cutting and goodledstrips.
formulated “The Three Laws of Robotics” designed to constrain robots
from harming humans. Asimov said, “I do not fear computers. I fear the
lack of them.” We agree. If we removed microprocessors from our homes,
our standard of living would plummet.
In a 1965 paper,Here's how an astronomer made his own turbinecompany on
the cheap with damaged, Gordon Moore proposed a concept that would
become known as Moore’s Law. He envisioned a digital technology that
increases very rapidly by shrinking transistors and, thus, greatly
increases the density of microprocessors. In the process the cost of
individual transistors would also decrease, making more powerful
processors affordable. Moore’s foresight was astounding.
“The
future of integrated electronics is the future of electronics itself.
The advantages of integration will bring about a proliferation of
electronics, pushing this science into many new areas,” he said.
“Integrated circuits will lead to such wonders as home computers or at
least terminals connected to a central computer, automatic controls for
automobiles, and personal portable communications equipment. The
electronic wristwatch needs only a display to be feasible today.”
And
that was 48 years ago! Today we sit composing this article with voice
recognition, at home on a laptop, and backing up on a cloud. We drive
cars with more than 50 processors; stay in contact, worldwide, with
voice, e-mail, and video on a smart phone; and buy digital watches for
less than $10. These are exciting times, while our innovations and
standard of living are limited only by man’s imagination.
But
back to Moore’s Law, which has been modified slightly over the years,
but the concept is solid. Today we say that transistor density on ICs
doubles about every two years. This is akin to compounded interest in
banking and has held true for the last 48 amazing years. To
illustrate,Republic cuttingmachine12 is
a privately owned professional parking management company based in
Chattanooga, in 1971, Intel’s 4004 processor had 2300 transistors. In
1978, the 8068 had 29,000 transistors. In 1989, the Intel 486 had 1.2
million transistors. In 1999, the Intel Pentium III processor had 9.5
million devices. Then 2010 found Intel processors with 774 million
transistors5 and 2013 dawned with 2.27 billion transistors.
As
exceptional as the density increase is, the rest of Moore’s prediction
has also come true. The price of microprocessors has declined, so they
have proliferated everywhere. You can now buy little processors for less
than $1 each. In high volumes, they only cost pennies. The engineers
also saw that a programmable microprocessor could be sold as a
standalone processor, starting the Intel families of processors.
Today,
manufacturers of specialty items can choose a general-purpose processor
over a completely custom IC. This decision is made on volume versus
cost, return on investment (ROI), and time-to-market. Consider a simple
decorative LED solar garden light that retails for $3.33. A block
diagram for an ASIC might include a solar cell, one AA rechargeable
battery,Many people are wearing stainless steel rings, goodlampshade,
and stainless steel necklaces. a boost converter for charging the
battery and running the LED, a clock oscillator, a state machine
(sequence counter),the benefits of wind energy and how a pendantlamperr is
installed. and LED switching transistors. The alternative is to use a
small microprocessor with a few external transistors and diodes. The
choice is an economic decision, because the ASIC has the relatively high
front-end cost of non-recurring engineering (NRE). Low volumes may
dictate the general microprocessor approach.
沒有留言:
張貼留言