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2010-04-22
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Back to the Future
In this little article we'll be taking a look at what a
magazine in the 1980s thought the computers of the 1990s
would be like. Here we go:
1. Keyboard Display
"""""""""""""""""""
The 32-bit microprocessor's power will allow the display of
information in a number of forms simultaneously. For
instance, the main screen might show the view from the
command seat of a spacecraft, while a subsidiary screen
mounted on top of the keyboard/command console might display
control information from the cockpit.
2. Keyboard
"""""""""""
Despit the innate ineffieciency of the QWERTY keyboard, it
is unlikely that serious attempts will be made to establish
an alternative layout. Fully sprung typewriter-style keys
are by far the most popular - though Hall effect keys, which
use magnets instead of springs, are likely to become
commonplace. The electronic switches themselves may well be
replaced by a system that relies on the keys interrupting a
matrix of laser beams.
3. Monitor
""""""""""
Projector televisions have been available since the
beginning of the 1980s but their scope is limited by the
light emitting power of the cathode ray tube. Advances in
CRT technology are likely to bring us room-wide projection
systems. Early projector televisions had to make use of
special curved screens, but the latest models can already
focus onto a flat surface.
4. Alternative Processors
"""""""""""""""""""""""""
In addition to the main 32-bit processor, it is likely that
the micro of the 1990s will be host to additional processors
in the form of plug-in modules. Some of the processing - for
example, the operation of a particular peripheral or sorting
a file of data - can then be "subcontracted" by the main
processor to the most suitable sub-processor. Alternatively,
inexpensive plug-in modules could emulate the classic
computers of the 80s so that software from any other
computer could be run without modification.
5. Random Access Memory
"""""""""""""""""""""""
The 32-bit processor can address up to almost 4,300 million
memory locations - a far cry from the 65,536 byte limit
imposed by the eight-bit processors that brought the
microcompuiter into the home.
6. Communications
"""""""""""""""""
While dish aerials for the reception of signals from
satellites will be commonplace in the 1990s and most
telephone channels will be digitised, rather than relying on
analogue signals, there will still be a need to regulate the
speed of transmission and reception. These communications
controllers will perform some of the control functions of
today's modulater/demodulaters (Modems! - David).
7. Power Supply
"""""""""""""""
The increased load and the multiplicity of devices connected
to the microcomputer are likely to require a significantly
greater power supply that those in use today. It will
incorporate smoothing circuits and rechargeable battery
back-up, so that mains fluctuations or power failures do not
cause data to be lost or corrupted.
8. Portable Screen
""""""""""""""""""
Flat-screen technology - probably involving a fast-acting
liquid crystal matrix and perhaps connected to the central
processor by an infra-red (or even microwave) link - may be
employed to display text and graphic matter. If this device
were touch sensitive, too, it could double as a menu
selection board and bit-pad or digitiser.
9. CD-ROM
"""""""""
The Compact Disk ROM, which uses laser beam to read
optically-encoded information, is likely to replace
conventional ROM cartridges because of its greater capacity
- a typical CD-ROM will hold four megabytes (What? Now it's
600Mb!!! - David)
10. Floppy Disks
""""""""""""""""
By the end of the decade, floppy disks should have evloved
to compete directly with Winchester disks, both in speed and
data-packing densities. At the same time they should reduce
in diameter to less than the current 3 inches.
11. Infra-red mice
""""""""""""""""""
The IBM PC Junior already makes use of infra-red radiation
to transer data from keyboard to computer without a cable
link. This technology could provide the interconnection
between all peripherals, including mice, thereby eliminating
the "spaghetti effect". Both left and right handed models of
mice will be available, of course (but they're not! -
David).
12. 32-bit Microprocessors
""""""""""""""""""""""""""
The first 32-bit microprocessor-based home computers
appeared in 1983, but were forced to rely on 16- or even
eight-bit data buses to maintain compatibility with existing
memory and chips and thus could not deliver the power they
promised. With the introduction of devices such as
Motorola's 68032 chip, which offers 32-bit processing and
32-bit data transfer, the speed and data-handling
capabilities of these large-capacity microprocessors will
become the accepted standard. Many minicomputers costing
tens of thousands of pounds have 32-bit microprocessors.