Early in 1992, I helped prepare a 5-Year Plan for the Huntsville Research Operations of Georgia Tech. This compares the forecasts I made with what actually happened. The text in blue italics is what I wrote in 1992, and the black text below it is the year 2000 update.

A One-Time Quantum Leap in Electronics Technology Over the Next Few Years

  "As one who has made a hobby out of forecasting progress in electronics technology , I foresee an unprecedented one-time surge in electronics progress over the next few years. I think this growth spurt began in 1991 and will continue through 1995, and perhaps into the next century. It appears to me that several "waves" are converging at once.
  "First, telephone bandwidths should widen dramatically for the first time, even as data compression techniques permit reductions in bandwidth requirements."
Year 2000 Update:
   Well, yeah, but bandwidth improvements didn't really begin to show up until 1999, and it will be the early years of the 21st century before most households enjoy the benefits of wide band service.
    In 1992, the telcos were touting 128-kilobaud ISDN service for $30 to  $40 a month.. But when ISDN actually arrived in 1995, the telcos charged $70 to  $100 a month for 64-kilobaud service, pricing it out of the market. On the  other hand, DSL services run 1,000 to 1,500-kilobaud downstream for as low as $40 a month, and provide far more capability than ISDN ever promised.

   "Second, cellular systems should advance rapidly with the advent of micro-cellular networks, wireless computer networks, and direct satellite relays,".
Year 2000 Update:
   That has more or less happened, with the proviso that the Iridium satellite service was a bust. And "you ain't seen nothin' yet". A transition from a wired world to a wireless world appears, in my opinion, to be in the offing between 2000 and 2010.

  "Third, IBM and Apple's announcement of the PowerPC project, which is scheduled to lead to 30-fold increases in high-end PC speeds by 1994, has forced competitors to accelerate their plans, promising desktop computers by 1995 which rival the supercomputers of 1990 . For example, Intel has advanced their introduction of the 80586 (scheduled for introduction this fall) by at least a year, and of the 80686 (now scheduled for introduction next year) by at least two years. Not to be outdone, TI and Sun Microsystems have announced plans for a 600-MIPS "SuperSparc" to be marketed in 1993. At the same time, supercomputers are projected to accelerate from speeds of 16 gigops for the Cray Y-MP to a 1,000 gigops by or before 1997, and perhaps, to multi-terops speeds by the year 2000. Again, this is a one-time jump in speeds as supercomputers shift from largely serial operation to massively parallel processing."
   In 1992, a vice-president of Hewlett-Packard had announced that their new RISC technology would lead to 500-MIPS HP microprocessors by 1995. I predicated the above forecast (that 1995 computer speeds would be about 30 times as fast as1992 computer speeds of, perhaps, 15-16 MIPS for a 40-megahertz 486) upon this and upon similar announcements from Apple and IBM. Normally, one might expect about a 4-fold increase in computer speeds over a 3-year period, so a 30-fold quantum leap would have been rather profound. In practice, computer technology didn't quite make it. The Intel Pentium Pro, released in December, 1995, clocked out at about 328 MIPS, or about 20 times the speed of a 1992 486. Still, it was an impressive delta. Interestingly enough, it was Intel with a CISC (Complete Instruction Set Computer) chip that won the race, rather than the RISC family of chips.
   The good news is that computer technology is still surging ahead, with multi-gigops chips due before year's end (the 1.4 GHz Willamette, and the Itanium chip).
   Intel delivered its terops Touchstone Delta processor to DARPA on schedule in 1997. I believe that a  100-terops computer is in the works for 2005.

  "Fourth, digital signal processors (DSPs) are scheduled to appear on Macintoshes and PCs toward the end of this year. (Fixed-function graphics accelerators are already built into our high-end graphics cards, but programmable DSPs are becoming available.) To give an example of what this means, the new AT&T AVP-1000 DSP chip set operates at speeds up to 25 gigops! These DSPs achieve their blazing speeds through parallelism (by performing the same operation of 32 to 64 parallel data streams), hard-wired functions optimized for specific purposes, and 8 to 24-bit data paths. In other words, they are a poor man's parallel processor. Speed increases this large may portend qualitative changes in the way we use computers. For example, voice recognition, simple household robotics, and desktop video teleconferencing are three of the applications which might be I think might be expected to surface within the next three years."
   It's now 8 years later, and voice recognition, while available, is crude, and designed to run on older computers, with no DSP support. However, speech recognition has come into commercial use in conjunction with various voice-response systems. Speaker-independent, continuous-speech voice recognition systems are apparently available but they didn't surface by 1995. And household robotics and desktop videoconferencing  certainly didn't surface by 1995. On the other hand, commercial robotics application have continued in the background, including such inventions as the automatic car wash, the ATM, anti-lock braking systems, and, most recently, automated trash pickup. This last item deserves a little embellishment.
   About a month ago, Huntsville transitioned to automated trash pickup, reducing the number of men on a trash truck from 3 (the truck driver, plus two trash handlers) to 1 (the truck driver). The new robotic trash trucks have a pair of hydraulically-operated arms that sense the (special) trash can, reach out and girdle it, lift it high overhead, and shake its contents into the yawning maw of the truck's cylindrical tank. These trash-collectors are robotic in every sense of the word, and yet, there's nothing revolutionary about them. In commercial settings, robotics has continued its penetration into the workplace. Voice response systems, smart search engines, improved character recognition software, and web-'bots are examples of AI in the consumer marketplace. The diffusion of robotics and AI is slow enough and subtle enough that we take it in stride. On the other hand, anthropomorphic household robots are still far away, although automatic, visually-guided carpet sweepers and lawn mowers might appear in a few more years.
   Desktop videoconferencing is, presumably, hostage to the widespread use of wideband telecommunications systems. However, in another three or four years, it may affect distance learning programs.

  "It may be that PC speed enhancements will track supercomputer speed increases beyond 1994, through the adoption of parallelism and the addition of programmable digital signal processors."
   The digital signal processors are there in the form of disk controllers, and graphics and sound cards. However, they're probably not programmable, although 30-gigops, multi-gigaflop, programmable DSP's are now available for $100.
   So far, parallel processing hasn't been necessary to speed up desktop computers. Clock speeds have gone from, perhaps, 15 MHz in 1990 to 1.5 GHz by the end of 2000. IBM has promised 4.5 GHz speeds by 2003, and SiGe chips might be capable of 3 to 5 times that speed. 10 GHz chips have been predicted later in the decade.

  "Fifth, both voice and video (though not broadcast video) may be expected to go digital within the next few years. This will permit such techniques as time-averaged noise filtering, enhanced definition TV using interpolation combined with image enhancement, and model-based encoding. I suspect that DoD may adopt digital communications techniques as they become commercially available."
    This is a slow and continuing revolution. We're in the long transition  period during which both digital and analog transmission schemes exist.  Conventional telephone lines still operate in analog mode from the counter to the curb, and are digital beyond that point. Internet based telephony is all-digital. VCR's are analog devices; DVD's are digital implements.  Eight years later, audio recorders and camcorders are switching from analog to digital.

  "Sixth, HDTV apparatus should enter the marketplace, providing higher quality, higher resolution video capture, storage, transmission and presentation equipment for consumer and military applications."
    HDTV was delayed several years over compatibility squabbles, and now,  although it exists, it's certainly not yet mainstream. I would expect a  few more years to pass before HDTV displays, camcorders, and players are  common and competitively priced. However, digital still cameras are preparing to displace most film cameras.

  "Seventh, large high resolution, flat-screen, color TV displays should become affordable, permitting practical stereo TV. Truly lightweight, head-mounted displays driven by RF links may become feasible."
   Large, flat-screen color TV displays have really been a Lorelei. LCD color displays never became either large or cheap. Stereo (3-D) displays haven't happened, either. The same kinds of displays that were common in 1992 (CRT's and CRT projection displays) are common today. Plasma panel and CRT projection displays are the current front-runners for HDTV output. Truly lightweight, head-mounted displays driven by RF links exist. They're a little expensive, and so far, they haven't really caught on.  Another thing that hasn't really caught on is virtual reality, except in support of computer games.

  "Some of these "waves" have been developing for several decades, and happen to be converging at about the same time."

    Summing it up, I was too optimistic about how fast some of  these improvements would occur. The original forecast had an aura of excitement about it, in keeping with its role as a wake-up call for an impending technological tour-de-force, but developments have been more evolutionary than revolutionary. Telephone bandwidths have widened slowly, and for most people, they haven't widened at all. Bandwidth compression schemes have no doubt improved mightily since 1992, and by now, they can  provide cameo-screen, herky-jerky video over voice-grade lines. Coupled  with wide-band service, as it penetrates the lay of the land, high-quality audio and video should be widely available by 2005, but it certainly wasn't available in 1995. Cellular phone service has arrived as advertised, tying into fiber-optic cables. Computer speeds didn't quite improve by a factor of 30 in 3 years, but they didn't miss by much, and they certainly outstripped the 4-to-1 acceleration that would normally have been expected. Speaker-dependent continuous-speech recognition software packages are available at your local computer store for as little as $49.95, including a noise-cancelling microphone, but they aren't yet ready for prime time. Household robots are still over the horizon, although robotics has continued to diffuse into industrial applications, such as voice response systems. There is always this time lag in commercial settingsbetween what can technically be accomplished, and what is cheap and in majority use.
   At the same time, there were some wonderful and revolutionary developments I missed:
(1) The Internet
(2) The sudden acceleration, beginning in 1995, of magnetic disk progress.
(3) The dramatic improvements and price declines in ink-jet printers.
(4) The dramatic price declines of scanners.
(5) The continuing validity of Moore's Law beyond 2000, when it was supposed to hit a "brick wall"
(6) Computer prices dropping into the few-hundred-dollar range.
(7) The Japanese eclipse, and the resurgence of the U. S. and Europe as world technological leaders.
    In short, the developments have been as dramatic as what I forecast, but not for the reasons I expected. The market-driven events have been delayed several years, while the rise of the Internet has helped offset these other delays. (I include practical speech dictation as a lagging, market-driven technology. Household robots, though, are another matter.)

The following is an additional set of notes that I also produced in 1992, together with their updates.

Technological Opportunities

    It appears to us that there a number of technological waves which are about to converge to produce an seldom-precedented surge of electronic progress.

(1) Telecommunications is undergoing revolutionary changes as:
- bandwidths increase from kilobaud rates to tens of kilobaud rates to (putatively) megabaud and later, gigabaud rates;
    Bandwidths have increased from multi-kilobaud rates to 33.6 kilobaud upstream, and about 50 kilobaud downstream. For me personally, running ADSL (since 1999), bandwidths have reached the megabaud rate downstream and the 400 kilobaud rate upstream. After years of somnolence, a telecommunications revolution is finally in full swing.

- both audio and video communications protocols switch from analog to digital mode;
    The conversion from analog to digital is taking place gradually. By 2006, the FCC has mandated that all TV transmissions are to be digital.

- digital data compression algorithms reduce bandwidth requirements
    Next year, streaming video, using the latest data compression algorithms, is supposed to go mainstream.

- it becomes a "wired world"
    The "wired world" has certainly become a reality. The next drift will be toward a wireless world.

- Programmable digital signal processors and application-specific integrated circuits approach image processing speeds at which machine vision systems can rival human vision.
    That may already be feasible but it hasn't taken hold.

- Programmable DSPs become fast enough and high-speed RAM becomes cheap enough that large-vocabulary, speaker-independent, voice recognition subsystems capable of recognizing continuous speech are feasible and inexpensive.
    Large vocabulary, speaker dependent voice recognition software is cheaply available, but I'm not sure just how capable hardware-augmented speech recognition is in commercial settings. Speech recognition add-in boards don't seem to have caught on for home use.

- RISC-based chips approach speeds at which autonomous, free-standing robot devices capable of performing industrial tasks become several-orders-of-magnitude more feasible than they are today;
    Two-orders-of-magnitude chips are available, but autonomous, free-standing robotic devices aren't exactly ubiquitous. "RISC" is no longer a buzzword. I'm anticipating the first visually-guided automatic carpet sweepers and lawn mowers no earlier than 2005, and then only as curiosities. By 2010, they could possibly be mainstream, and perhaps by or before 2015, they might be on sale at Walmart.

- Fractal-based, mosaic screen-projection videophones (if necessary, using multiple cameras, multiple phone lines) Need to rework a videophone so that its display can be used as a projection panel. Need to develop a high-resolution videophone, perhaps using multiple lines to transfer data.
    Sounds like some good ideas. However, fractals are out. Evidently, there are some problems with using LCD panels for screen projection. And by now wide-band lines can give us adequate videophone capabilities, with any kind of display and speaker system for output.

- Remote teaching of courses over videophones (the extended classroom)
    Now known as "distance learning", and shows great promise.

- Computer-aided instruction at the undergraduate and graduate level
    Some coursework is available.

- Conference call capability for a large number of callers (needed to support the remote teaching of courses)
    It's known as NetMeeting, and it's available from Microsoft and Netscape.

- Object-oriented encoding/local animation, based upon machine vision.
    It's known as MP4, and it's hot!

- Robotics kits
    Lego Mindstorms

- The automated office: groupware, two-way video intercoms, at-your-desk teleconferencing, the virtual office, online document storage and retrieval, automatic font construction,
   Not as much in evidence as I would have expected by now. Videoconferencing is probably key.

- Online document storage and retrieval system.
    Available in spades.

- Text, font, format compression
   Part of our infrastructure by now.

- Industrial automowers, industrial carpet sweeping, cleaning robots, "ScoutAbout"
    "Scout About" never made it to market. One automower is on the market. No visually-navigated robots are in widespread use. Might see experimental prototypes in 2005.

- Machine vision.
    Used for visual inspection in manufacturing

- Robotics
    Special purpose "robots" are gradually infiltrating the world.

- Cellular wireless local area networks tied into ISDN and later, to SONET networks
    They're tied directly to fiber-optic trunks.

- Miniature lunar and Martian solar-powered mapping/mineral prospecting robots (tested first on the ground) (self-repairing? mutually-repairing?)
    NASA is pioneering in this.

- Application of the above to terrestial mapping, prospecting.
    Carnegie Mellon robots are being used for Antarctic missions.

- A battery-powered, solar-rechargeable Martian UAV
- Definition of the minimum equipment which must be transported to Mars in order to construct a micro-industrial base.
    I don't know their status.