May 8, 1997

WHAT'S HOT IN THE DESIGN COMMUNITY

Wizards automate data acquisition

With the introduction of V4.1, National Instruments significantly improves the ease of use of the LabView data-acquisition package without sacrificing capabilities. V4.1 retains G, the package's connect-the-blocks graphical-programming language, and the versions for Windows 3.x, 95, and NT add a group of "wizards" that automate application development. You describe your measurement connections and application needs, and the wizards generate a ready-to-compile G program. According to the company, you can often go from an application concept to a running program in less than 5 minutes. Moreover, further customization and optimization are easy because the program source comprises standard G code.

Besides the wizards, the Windows versions add online tutorials, automated links to LabView Web sites, and an object-linking and -embedding interface for automated report generation via the company's HiQ package for Windows 95 and NT. Besides the Windows versions, LabView 4.1 is available for 68K and Power Macintosh systems, Sun and HP workstations, and real-time systems from Concurrent Computer (Fort Lauderdale, FL). LabView prices begin at $995. LabView for Windows users can upgrade for $295. Upgrades for users of other systems are free.

--by Dan Strassberg

National Instruments, Austin, TX. 1-800-258-7022, fax 1-512-794-8411, info@natinst.com, www.natinst.com.

Battery "gas gauge" tells and shows capacity

When your system needs to know the available charge in its rechargeable batteries, you use a gas-gauge IC. When a system user also needs to know that figure, consider a device such as the bq2092 from Benchmarq Microelectronics. This capacity-monitor IC not only provides state-of-charge, capacity remaining, and time remaining data, but also directly drives a four-segment LED, which displays battery full-to-empty capacity in 25% increments. The IC uses the SMBus protocol and supports Smart Battery Data (SMData) commands and charge-control functions. It handles NiCd, nickel-metal-hydride, and Li-ion chemistries.

The IC uses a two-wire interface as its serial communications link and is small enough to fit into the crack between two batteries, as part of a smart battery pack. It estimates the battery self-discharge based on an internal timer and a reading-compensating temperature sensor, along with user-programmable rate information, which the IC stores in an external EEPROM. Over the span of a full-to-empty discharge cycle, the bq2092 also learns details of battery capacity. The IC has 120-mA typical operating current. To minimize system power consumption, the user-display LEDs are not always active. Instead, users control them via a pushbutton, so that they are active for 4 sec when a user pushes the switch. You can also set them to be active whenever the charging rate exceeds 100 mA. The IC comes in a 16-pin SOIC and costs $5 (10,000).

--by Bill Schweber

Benchmarq Microelectronics, Dallas, TX. 1-972-437-9198, www.benchmarq.com.

Handheld $795 logic-timing analyzer packs three 100-MHz channels

Hewlett-Packard's handheld, $795 E2310A Logic Dart fills the bill if a benchtop logic analyzer is overkill and a simple logic probe is inadequate. The multifunction instrument, which resembles a TV remote control sporting a large LCD, includes a three-channel, 100-MHz logic-timing analyzer that lets you separately trigger each of Logic Dart's channels. The unit stores 10 2048-sample records and offers a pan-and-zoom capability to provide a detailed view of the two-state waveforms. Besides the timing analyzer, the device contains a 31/2-digit DMM that also makes diode, continuity, and frequency measurements. A pair of LEDs indicates whether voltages are above the logic-high threshold, below the logic-low threshold, or between the two. If the LEDs flash alternately, the signal is toggling between the low and high states, but the flash rate is unrelated to the toggle frequency. The instrument normally receives power from three AA cells but can also operate from an included ac adapter.

--by Dan Strassberg

Hewlett-Packard Co, Palo Alto, CA. 1-800-452-4844, www.tmo.hp.com.

New µC comes with big MAC

Well aware that a single-cycle multiply-accumulate (MAC) unit is the fundamental ingredient of a DSP, Toshiba claims that its TMP93xM84F, a member of the new TLCS-900/L 16-bit µC family, performs single-cycle MAC operations via a MAC unit and a 35-bit accumulator. However, this performance does not account for the register-load times.

The new TMP93xM84F also contains a duty-cycle controller (DCC), a kind of "poor man's PLL." The DCC maintains a 50%-duty-cycle internal clock and allows the µC to use both edges of the clock. For example, the TMP93xM84F operating at its maximum of 10 MHz would require the same frequency on the external oscillator. Other 900/L µCs require the external oscillator to run at twice the internal operating frequency.

Toshiba's TMP93xM84F also contains a 10-bit A/D converter with an external trigger start, three UART channels, two 16-bit timers, a watchdog timer, four capture/compare channels, and two comparator-buffer channels. The devices come in an 80-pin LQFP. The ROMless TMP93CM84F sells for $7, and the one-time-programmable TMP93PM84F sells for $15 (10,000).

--by Markus Levy

Toshiba America Electronic Components, Irvine, CA. 1-800-879-4963.

Wireless-LAN module yields maximum performance in micro package

For handheld PCs, data-collection terminals, and battery-operated monitoring equipment, the RF link must be small but not small enough to compromise performance. To meet these needs, Proxim has developed the 2.4-GHz, 1.6-Mbps RangeLAN2 6330, a frequency-hopping, spread-spectrum module that measures 1.65×2.65×0.23 in. (42×67×5.8 mm) thick, about two-thirds the size of a standard business card and half the size of a standard PCMCIA card. The 0.7-oz/20g module, which includes an ISA interface to simplify integration, is compatible with Proxim's RangeLAN2 PC Card and ISA adapters, access points, and design-in modules, and it complies with the Wireless LAN Interoperability Forum specifications. It supports 15 noninterfering, colocated channels, so that you can operate as many as 15 networks in one location.

With its 20-dBm output with 2-dBi antenna gain, the typical 6330 range is 1000 ft (approximately 300m). Because multipath and fading can be problems with low-power mobile units, the 6330 supports antenna diversity, allowing you to control an external switch and thus select between two antennas. Typical receiving sensitivity is ­85 dBm with BFSK modulation and ­77 dBm with 4FSK (four-state FSK) modulation. The card operates from a 5V supply and consumes 300 and 150 mA in transmitting and receiving modes, respectively. It also offers lower than 10-mA sleep and doze modes.

A developer's kit and design guide include hardware, software, support, and documentation for a two-node network, along with DOS and Windows drivers, driver tools (portable C source code) for non-DOS applications, and other utilities. The RangeLAN2 6330 costs less than $350, depending on OEM volume, and the developer's kit costs $4995.

--by Bill Schweber

Proxim Inc, Mountain View, CA. 1-415-960-1630, www.proxim.com.

Embedded memory blocks zoom at 500 MHz

New memory compilers from Artisan Components (formerly, VLSI Li-braries) fit well in high-end, µP-based systems. By optimizing each compiler for a specific 0.25-µm process, the memory blocks can operate faster than the 300-MHz system speed (worst case, for a 64-kbit block) and at 500 MHz under typical process and operating conditions.

Artisan offers a choice of synchronous single-port-SRAM, synchronous dual-port-SRAM, dual-port register-file, and triple-port register-file compilers. The synchronous single-port SRAM compiler can create a block as large as 256 kbits, with a 2- to 128-bit-wide word and a 16-word to 8k-word depth. Both RAM compilers produce SRAMs with an automatic power-down feature, reducing block power consumption between read and write operations. Each memory generator creates models and representations for many leading design tools, including HDL simulation models, timing models, and physical views for floorplanning and place-and-route tools.

Artisan's memory compilers also include a Universal Test Interface (UTI). The UTI lets you plug a compiled memory block into multiplexer-isolation, scan, serial-test, and parallel and serial BIST test-methodology environments.

Prices vary, but each memory generator costs approximately $500,000 for a specific 0.25-µm process.

--by Jim Lipman

Artisan Components, San Jose, CA. 1-408-453-1000, fax 1-408-453-3500, www.artisan.com.

TSOP clip enables no-compromise probing of fine-pitch IC packages

TSOPs with 28 and 56 pins have become especially popular among manufacturers of memory devices because pc boards containing memory require that you pack the chips as densely as possible. Until now, though, such layouts often failed during debugging or testing. A new low-profile TSOP clip from Emulation Technology aims to solve that problem, however. The clip allows the spacing between TSOPs to be as small as 0.03 in. yet offers a variety of ways to get good-sized probes onto the IC leads.

The heart of the clip is a patented element that the company calls a "directionally conductive elastomeric connector." In fact, the elastomeric part is not conductive at all. Wrapped around an elastomeric insulator is a thin layer of Kapton on which parallel conductors are printed. These conductors contact the IC leads. You solder the TSOP ICs to your board in the normal way and snap the clips onto the chips. The clip extends the IC leads to test points on rigid or flexible circuit boards of several configurations. Your probes or connectors contact these boards. You can replace the "conductive-elastomeric" subassemblies should they exhibit wear after a large number of insertion/withdrawal cycles. Prices begin at $450.

--by Dan Strassberg

Emulation Technology Inc, Santa Clara, CA. 1-408-982-0660, fax 1-408-982-0664, www.emulation.com.

Tools ease analog design and test

Opmaxx's new tools, DesignMaxx, FaultMaxx, and TestMaxx, ease analog-chip-design analysis and test automation. You use DesignMaxx for "design centering" of analog circuits, assisting you in designing analog blocks within a fabrication-process spread. A circuit centered within expected process variations has minimum sensitivity to fabrication variants. With only two circuit simulations, DesignMaxx produces a graphical overview of process sensitivity for all circuit components. DesignMaxx quickly computes design sensitivity, letting you use it on large circuits.

FaultMaxx lets you compute analog-circuit fault coverage. The tool combines DesignMaxx sensitivity results with circuit connectivity and layout information to model and compute analog faults. FaultMaxx sorts the faults into hard, or catastrophic, faults and soft, or parametric, faults. Soft faults result from component or process variations that cause circuit malfunctions or marginal chip failures. The tool places hard and soft faults in a fault dictionary, which TestMaxx uses to build a test strategy.

TestMaxx uses DesignMaxx and FaultMaxx data to create an analog test environment, including tests for dc, ac, and transient conditions. TestMaxx has a generic automatic-test-equipment (ATE) interface; future versions of the tool will interface to testers from some well-known ATE manufacturers.

DesignMaxx costs $70,000, FaultMaxx costs $25,000, and TestMaxx costs $60,000. All three tools cost $135,000.

--by Jim Lipman

Opmaxx, Beaverton, OR. 1-503-520-9200, fax 1-503-520- 1636, www.opmaxx.com.

Op amp outslews monolithic competitors

When you need pulse fidelity, a fast-slewing op amp is key to low signal distortion. The current-feedback AD8009 from Analog Devices features a 5500V/µsec slew rate--twice that of available monolithic devices--and rise/fall times of 725 psec for a 4V step.

The AD8009 offers 1-GHz small-signal bandwidth (unity gain) and 700 MHz (gain of 2), and spurious-free dynamic-range figures are 74 dBc at 5 MHz, 53 dBc at 70 MHz, and 44 dBc at 150 MHz. The device settles to 0.1% of full scale within 10 nsec. Operating from ±5V supplies, the op amp drives at least 150 mA into a 10 ohms load; it can also drive four "back-terminated" video loads with less than 0.03% differential gain and 0.03° differential phase errors. The AD8009 costs $2.99 (1000).

--by Bill Schweber

Analog Devices Inc, Norwood, MA. 1-617-937-1428, www.analog.com.

Widen your reach with Web-conferencing book/CD

Do you want to reach out to more people on the Web? Building Your Own Web Conferences, a new book by Susan B Peck and Beverly Murray Scherf, helps Windows NT and 95 users create and manage Web discussion groups. The 350-pg manual offers instructions on setting up and administering conferences, tips on customizing the look of virtual boards, and case studies of successful Internet and intranet Web conferences in businesses and universities.

The book includes the vendor's updated WebBoard 2.0 software, which enables users to host live, real-time, threaded chat discussions on multiple topics with unlimited participants. With WebBoard, you can create multiple, concurrent Internet-, intranet-, or extranet-accessible discussions from any Web location. Building Your Own Web Conferences (ISBN: 1-56592-279-4) costs $59.95.

--by Kasey Clark

O'Reilly & Associates, Sebas-topol, CA. 1-707-829-0515, ext 322.

Intel Klamath processor: ready for prime time

The evolution of the PentiumPro architecture continues with the Pentium II, otherwise known as Klamath, or P2. From a functional perspective, the Pentium II is a 266-MHz PentiumPro with support for the 57 multimedia-extension (MMX) instructions and 16-kbyte, level 1 instruction and data caches. Similar to the PentiumPro, P2 supports out-of-order execution; speculative execution; register renaming; the backside level 2 cache bus; and the PentiumPro's pipelined, multiple-transaction bus structure. Also, Pentium II can still use Intel's 440 FX chip set. Unlike PentiumPro, P2 operates with industry-standard pipeline-burst SRAMs that run at half the speed of the processor core.

Besides MMX support, P2 contains other performance-enhancing features, including improved 16-bit performance and a flash reset for the shared floating-point/MMX registers. Although the Pentium requires as many as 50 clock cycles to reset the shared registers when switching from MMX to floating-point mode, P2 requires fewer than 10 clock cycles.

Starting with the Pentium II, Intel is introducing a single-edge-contact (SEC) cartridge to replace the standard PGA. The SEC cartridge contains the Pentium II and a 512-kbyte, level 2 cache surface mounted to a substrate and enclosed in a plastic and metal cartridge. Similar to PCI add-in cards, the SEC cartridge plugs into what Intel calls "Slot 1'' on a PC motherboard. The 233- and 266-MHz versions sell for $636 and $775, respectively (1000).

--by Markus Levy

Intel Literature Center, Mount Prospect, IL. 1-800-548-4725, www.intel.com.

ISP devices target datapath applications

Lattice Semiconductor's in-system programmable Generic Digital Crosspoint (ispGDX) family shares many characteristics with the company's existing PLDs, such as programmable output polarity; three-state control; and registered, latched, or simple combinatorial-output configurations. However, Lattice targets the devices for integrating discrete latches, registers, transceivers, and multiplexers, as well as enabling in-system reconfiguration of pc-board signal routing and DIP switch/jumper functions. This architecture makes the devices unsuitable for traditional PLD random-logic integration. In exchange, though, they provide much faster performance, with input-to-output and clock-to-output delays as fast as 5 nsec; they also provide a more cost-effective alternative to similar dedicated functions implemented in a generic PLD. You can also specify output slew rate and full CMOS-vs-open-drain mode on a pin-by-pin basis.

Full device EEPROM reconfiguration via either Lattice's proprietary ISP or IEEE 1149.1 JTAG protocols takes several seconds, depending on density, with 20-year retention and support of as many as 10,000 reconfigurations. The device does not support partial reconfiguration, so reconfiguration must typically occur while the system is offline. Once you configure the ispGDX, however, switching among as many as four multiplexer inputs per output can occur as fast as 5 nsec.

I/O counts range from 64 to 160, with the highest pin-count device sampling now and others available in the second half of the year. Production will lag behind samples by two to three months in all cases. Packaging options include PQFP, TQFP, and PLCC, and first-generation devices operate at 5V, with 3.3V versions planned for next year. Price for the 5-nsec, 160-I/O-port iSPGDX160-5Q in a 208-lead PQFP is $27 (1000), and the 7-nsec version costs $18. --by Brian Dipert

Lattice Semiconductor Corp, Hillsboro, OR. 1-503-681-0118, fax 1-503-681-3037, www.latticesemi.com.

PLDs satisfy the need for speed

Altera based its upcoming MAX9000A product line on a 0.5-µm, three-layer metal process that will both reduce costs and improve performance compared with the company's MAX9000 family. For example, the 320-macrocell EPM9320A has a projected 7.5-nsec input-to-output propagation delay, twice as fast as that of the EPM9320. The 560-macrocell EPM9560A will have dice less than half the size of the EPM9560.

MAX9000A devices will be package-, pinout-, function-, and program-file-compatible with their MAX9000 counterparts and will retain 5V core operation. One notable MAX9000A enhancement is the company's MultiVolt interface, which enables I/O configuration above, at, or below the core voltage--in this case, as low as 3V. Altera targets volume production for the end of next year. Prices are $10 (25,000) for the 320-macrocell version, $13 for 400 macrocells, $16 for 480 macrocells, and $20 for 560 macrocells. Samples of the EPM9320A and EPM9560A will be available in the third quarter of this year, and samples of the EPM9400A and EPM9480A will be available in the fourth quarter.--by Brian Dipert

Altera Corp, San Jose, CA. 1-408-894-7000, fax 1-408-435-1394, www.altera.com.

RF headaches? Take a 2.4-GHz "aspirin"

RF electronics are shrinking, and so are the requisite antennas. As frequencies get higher and wavelengths get shorter, antennas can inherently be smaller, but they still can be relatively larger or more awkward that the rest of the system. Aiming to change that image, the 2.450-GHz DAC2450A antenna from Toko America, measuring 16 mm in diameter and 6.5 mm high, looks like a pill. It mounts directly to a pc board, such as an extended PCMCIA Type II card. You attach the disk directly to the circuit board, using a 50×76-mm underlying area of the board as its ground plane.

The 50 ohms ceramic dielectric element produces a vertically polarized omnidirectional radiation pattern. Bandwidth is ±50 MHz (3 dB), and peak gain is 0 dBi typical and 2.15 dBi maximum. The DAC2450 is less susceptible to interference from adjacent metal objects than the common inverted-F antenna, which typically uses a 20×20-mm plane element spaced off from a ground plane. The 4g device costs $5 (1000).

--by Bill Schweber

Toko America, Mount Prospect, IL. 1-847-297-0070, www.tokoam.com.

Noise filtering enhances speech recognition

Background noise--either stationary, such as from fans, or intermittent, such as bell ringing or door slamming--wreaks havoc on speech-recognition systems. To alleviate this problem, the Sensory Speech 2.0 software upgrade for the company's speech-recognition chips filters both types of extraneous background noise.

The upgrade applies to all of Sensory's neural-network-based products. It uses a baseline noise profile that improves noise immunity across home and automobile environments. Sensory will work with customers to fine-tune noise-immunity characteristics for specific environments. Test results for speaker-independent recognition of digits 0 to 9 show accuracy of 98.5% compared to 95.3% without the software upgrade.

Sensory Speech 2.0 is available for all Sensory products without price increases. Sensory sells speech-recognition ICs for less than $5 (100,000).

--by Stephen Kempainen

Sensory Inc, Sunnyvale, CA. 1-408-744-9000, fax 1-408-744-1299, www.SensoryInc.com.

Low-cost data-acquisition unit delivers high reliability

Hewlett-Packard's 34970A data-acquisition unit targets users who won't compromise on reliability but will make some performance trade-offs to obtain ease of configuration and use at minimum cost. Most 34970A users will never miss the performance they give up. The instrument looks like a benchtop DMM and is available with a 61/2-digit DMM inside. The DMM offers basic dc-voltage error of 0.004% for one year and ac error of 0.06%. The unit is modular, however, and rear-facing slots accept three switching modules from a library of eight. Among the types are 20-channel, two-wire; 40-channel, single-ended, armature-relay multiplexers; and a 16-channel, two- or four-wire, reed-relay multiplexer. The armature relays scan 80 channels/sec, and the reed relays scan 250 channels/sec. With three single-ended, armature-relay modules, a 34970A can scan 120 channels. Besides these less-than-10-MHz modules, several RF switching modules are also available. The mainframe without the DMM costs $795. With the DMM and a 16- or 20-channel multiplexer, the unit costs $1685. Module prices range from $295 to $495.

--by Dan Strassberg

Hewlett-Packard Co, Palo Alto, CA. 1-800-452-4844, www.tmo.hp.com.

CMOS camera chip outputs NTSC colour video

VLSI Vision's VV6405 colour camera chip offers price, size, and power-consumption advantages over CCD-based alternatives. Complete camera and video processing resides in a single 48-pin LCC package that runs off 5V. The device operates on approximately 100 mA at 5V, which represents 20 to 30% of CCDs' power consumption. A complete camera module consists of the chip, a crystal, a few passive components, and a lens mounted on an approximately 25312-mm pc board. This compares with two 500-mm² pc boards (typical) for a CCD module.

The camera chip couples its CMOS image sensor with a 300-MIPS DSP controller, an 8-bit ADC video converter, and an NTSC composite video encoder. The chip also includes a video timing controller, five video line memories, a video DAC (drives 75V), and automatic colour-balance and exposure control. The 4.733.5-mm photoplane sensor array has 3063244 pixels, functioning in light levels of 100k to 50 lux.

The company's decision to produce an NTSC-compatible version reflects major US market requirements. A PAL version will follow (depending on US market acceptance of the NTSC part). Volume shipments due in June (approximate cost is $70/module in low volume).

--by Brian Kerridge

VLSI Vision, Edinburgh, UK. +44 131 539 7111, www.vvl.co.uk

Flash memory has 264-byte sectors

Atmel's AT45DXX1 family of serial-interface flash memories has 264-byte sectors that suit data storage in applications such as answering machines, pagers, and digital cameras. With today's compression techniques, 4-Mbit devices can store up to 25 minutes of voice data; 16-Mbit devices suit image storage in camera and fax-machine applications.

This flash-memory family currently comprises the 4-Mbit AT45D041 (5V supply) and the AT45DB041 (2.7V supply). In addition, 1-, 2-, 8-, and 16-Mbit versions will augment the family by the third quarter.

All memories perform read and write operations on a single power line, including the 2.7V versions. The memories incorporate an SPI and two 264-byte RAM buffers that allow you to transfer data selectively in and out of the main memory array. This transfer provides a convenient way of updating main memory data and operates on a virtually continuous data stream.

The data-storage capability of these memories eliminates the need for battery-back-up parts used in audio-DRAM alternative voice-storage designs. The 264-byte sectors compare with minimum 4k sectors in competitive parts and enable your design to handle shorter minimum-message lengths. The smaller sector also avoids the unnecessary erasure and subsequent rewriting of valid data, which in turn extends the lifetime of the memory by reducing the number of read/write operations. The 4-Mbit versions reside in 28-pin SOICs or TSOPs.

--by Brian Kerridge

Atmel, Camberley, UK. +44 1276 686677, www.atmel.com

Transceiver IC completes DECT module

National Semiconductor's LMX3161 radio transceiver IC, together with a separate power amplifier and baseband processor, enables you to build a complete DECT (digital European cordless telecommunications) phone or basestation. The LMX3161 integrates all DECT RF transmit and receive functions. On the transmit side, the IC includes a 1.1-GHz PLL, a 2.0-GHz frequency doubler, and an HF buffer. The single conversion receive side includes a 2.0-GHz mixer, a 110-MHz IF amplifier with 85-dB gain, an analogue dc S/H compensation loop, and a receiver signal-strength indicator. On-chip regulation allows you to run the IC from a 3 to 5.5V supply. An additional voltage regulator outputs a stabilised 2.75V supply for external discrete parts.

Companion devices for a complete DECT module include the LMX2119 PA and either the SC14401 handset processor or SC14421 basestation processor. The LMX3161 resides in a 48-pin PQFP; volume production is due by second quarter. A complete RF module costs <$20.

--by Brian Kerridge

National Semiconductor, Fürstenfeldbruck, Germany. +49 180 5327 832.

Single-chip ISDN network terminator supports 4B3T line code

Alcatel Mietec's MTC-20277PQ-1 network-terminator IC targets basic-rate ISDN applications in countries that use 4B3T line code, such as Germany, Belgium, and South Africa. Germany's Deutsche Telecom, in particular, is promoting ISDN deployment for consumers (and needs the lower cost advantages of single-chip designs).

The MTC-20277PQ-1 embodies an ARM thumb mC to combine "S-" and "U-interface" functions. The chip requires only external isolation transformers, a crystal, and approximately 20 passive termination components.

The chip also includes a serial general-circuit interface (GCI), which you can configure in two modes. The first mode uses the GCI to monitor data flow between the "S" and "U" ports in a standard NT1 ISDN application. The second mode allows separate access to the S or U ports by an external controller to support ISDN NT1+ operation. This mode allows you to design-in additional features such as interfaces that adapt older generation analogue equipment to the ISDN.

Alcatel is currently sampling a pin-compatible version that supports 2B1Q line coding. The chips run off 3.3V, consume <300 mW, and reside in 44-pin PQFPs.

--by Brian Kerridge

Alcatel Mietec, Brussels, Belgium. +32 2 728 18 41, www.alcatelecom.be/mietec

CALENDAR

May 29 to July 11

University of Oxford Summer Engineering Program, Oxford, UK, offers 22 short courses on state-of-the-art engineering topics, including digital-communications systems, wireless-communication technology, electronic circuits and systems, electronic packaging, and optical engineering and nontechnical professional development. Continuing Professional Development Centre, Department for Continuing Education, Oxford, UK. +44-1865-288170.

May 11 to 16

Society for Information Display '97, Boston, features 222 exhibitors of electronic-display technology, including LCDs, plasma displays, CRTs, components, and monitors. Palisades Institute for Research Services, Arlington, VA. 1-703-413-3891.

June 1 to 5

Supercomm '97, New Orleans, offers seven technology pavilions featuring components, Internet, computer-telephony integration, multimedia, fiber optics, software, and wireless. Supercomm '97, Chicago, IL. 1-312-559-3327.

June 2 to 5

Comdex/Spring '97, Atlanta, which runs concurrently with the Windows World '97 conference, focuses on connected computing technology in business. Registration costs $795 and includes admission to both conferences; one-day cost is $495. Softbank Comdex Inc, Needham, MA. 1-617-449-8938.

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