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Presents guidelines for transforming a single-user DOS program into a multiuser, LAN-aware DOS program. Basic tools for development; User and workstation identification; File locking; Record locking; User locking; Other tips.

Discusses Intel's 486 chip, the DX2, which operates internally at twice the clock speed of the rest of the system, thereby adding to the system's performance without adding greatly to its overall cost. How the 50-MHz 486DX2 works; Impact of the DX2; Results of performance tests; Buying considerations; DX2's role in Intel's marketing strategy; DX2 as upgrade to 486SX machines. INSET: Byte action summary; The twice-as-fast chip.;A tale of two....

Presents the views of several software program developers on current and future trends in software technology. Support for software purchasers; Off-the-shelf vs. in-house-developed software; User-interface standard; Graphical user-interface; Multimedia; Downsizing; Object-oriented programming; Programming languages and tools.

Part II. Discusses AIX Access for DOS Users (AADU). How AADU works; Support of file and record locking; Memory usage and performance; Oracle innovations.

Describes the network management tools IBM uses to manage its Token Ring LANs. Medium Access Control (MAC) frames; Systems Network Architecture (SNA); Management Services standard; Logical Link Control layer frames; IBM's LAN Manager; NetView integrated functions; Auditing and controlling a LAN; Strengths and weaknesses of IBM network management tools. INSET: IBM's network management tools..

Reports on trends in network operating systems (NOS) according to nine LAN experts, including: Craig Burton, CEO of Clarke Burton Corp., David Rosenlund, Senior Product Manager, Distributed Computing, for Sun Microsystems, and John Edwards, Product Line Manager, Novell. Impact of new NOS technology; Description of a NOS; Applications.

Compares IBM's OS/2 2.0 and Microsoft's Windows NT (New Technology) operating systems. Similarities between two systems; Windows NT's architecture and environment; Applications; Localized input and threaded-message queue differences; Multiprocessor environment; Recommendation; Projected release dates.

Describes Hewlett-Packard's (HP) Network Advisor, the first artificial intelligence (AI)-assisted analyzer. Description of the Network Advisor; Fault Finder software; Using an analyzer with a LAN; Future of AI analyzers.

Presents an in-depth look at Novell's packet-burst technology and IBM's 100-Mbps Token Ring, two innovations network users should expect to see in 1992. How packet-burst technology works; Using packet burst; Problems; IBM's new 100-Mbps Token Ring LANs; Early Token Release (ETR) feature; Prioritization scheme. INSET: ETR explained..

Presents examples of how problems can crop up on local area networks (LANs). Token-ring trouble; Corrupted files; File buffering bugs; No easy answers to LAN problems.

Gives advice on writing NetBIOS-aware software for a LAN. Adding and deleting NetBIOS names correctly; NetBIOS datagrams; Creating sessions; Verification that messages are being sent and received.

Gives advice on identifying LAN performance problems. Performance factors; Network analyzers.

Looks at the benefits of using AIX (IBM's Unix network operating-system environment). Benefits over other network operating systems; Network File System (NFS) vs. AIX Access for DOS Users (AADU); Pros and cons.

Discusses the benefits of remote procedure calls (RPCs) in building client/server systems. Example; How to use RPCs; Creating an RPC; Potential proprietary and floating-point number problems; Deciding when to use RPCs.

Gives advice on fixing NetWare LAN problems. Dealing with a server that fails to reboot or crashes; Network-level problems; Decoding server messages; Products to diagnose performance problems; Need for NetWare-oriented monitor program.

Describes the most common LAN gateway, the asynchronous gateway, or `modem pooling' device. Dedicated gateways; How gateway software works; Problems; Choosing a gateway.

Looks at the features of a set of TCNS network cards from Thomas-Conrad. Ba sic features; Cabling used; Network adapter's features; Description of TCNS; Memory capabilities; Results of speed tests; Recommendation.

Describes Diet Disk, an on-the-fly file compressor, as well as AppleEase utilities freeware and Usenet News, a worldwide users network.

Discusses the features of BASIC-C, a compiler written in Prolog which translates from BASIC into C. Also discussed are Apollo 0.7b2, a free commercial application launcher for the Mac Desktop and version 5. Revision Control System (RCS) for source file management.

Looks at three DOS enhancers: Need, Get and Ask, which add features to batch-file programs. Friendly environment from Need; How Get supplements DOS batch-file commands; Ask's role in multiple-choice answers.

Looks at the features of QVersion, a NetWare utility, two freeware programs that prepare binary codes for transfer over Unix mail systems and BroadCast, a shareware message program for the Macintosh.

Describes briefly a DOS memory map utility called MAPRAM, a Unix text-based calendar utility and Kenneth Seah's Edit II text editor for the Mac.

Describes a DOS program, KILLPROG, which removes PC programs in the same manner as MARK and RELEASE. Assembly source code; Running KILLPROG; Benefits; Balloon Help and Helium for the Mac System 7.0 software; Enhanced Kermit communications and file transfer program.

Presents source code for a NetBIOS-based E-mail application that doesn't use a file server. The benefits of the Systems Errors desk accessory for the Mac and Elm, a Unix E-mail system user front end, are also discussed.

Reports on two shareware text editors, Boxer by David Hamel and E by David Nye, as well as the Applicon task switcher and the Unix patch utility.

Briefly reviews three free software programs, a utility called Stuffit, the vtree subdirectory map and Font Cascade, an Apple utility.

Examines three free programs: Spooler, a disk-based print spooler, the System Picker 1.0b5 and the Unix share shell archiver.

Describes briefly three free programs: NETMAP for NetWare LANs, Swatch 1.1 that monitors Macintosh memory usage, and the UUSTATUS utility which displays the current status of active UUCP connections.