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1. MS DOS Alternatives
IBM and several other PC manufacturers all sold customized versions of Microsoft's MS-DOS, and that there was a competitor called DR-DOS. Gary Kildall, whom we left several pages ago spurning IBM's offer to create the operating system for the PC, went on to finish his 16-bit operating system, called CP/M-86. Kildall sued IBM and Microsoft for copying CP/M, and eventually reached a settlement whereby IBM agreed to offer CP/M-86 in addition to PC-DOS. And IBM did offer CP/M-86, for $240 a copy, versus $40 for PC-DOS. It d...

2. The Evolution of Microsoft Windows ~ Windows XP 64 bit Editions
The CPU story is not over, however. The need for processors capable of handling far more than 4GB of memory has led to development of two competing 64-bit architectures. Intel developed and promoted a 64-bit architecture called IA-64 or Itanium, intended primarily for database and network server computers. Advanced Micro Devices also produced a 64-bit architecture, called x64 or AMD-64. Intel is now manufacturing chips that use the x64 instruction set. x64 processors typically yield better performance than Itanium running 32-bi...

3. Managing Startup Programs under Windows XP
Besides ensuring that your computer has adequate memory, one of the next best ways to improve your subjective experience of Windows' speed is to make the logon process faster. The logon process can be greatly slowed by large numbers of programs that are launched automatically upon logon; the desktop and Start menu don't respond until all of the login programs have been activated. Keeping the list of startup programs short is a constant struggle, however. To hide the fact that many common programs are poorly written and ...

4. How to Configure Automatic Updates in Windows XP
Automatic Updates is a mechanism with an awkwardly plural-sounding name by which Microsoft or corporate network managers distribute critical security updates to Windows users. Fixes sent by this means are considered so important for adequate security in the hostile Internet environment that Microsoft prefers that you configure it to download and install the updates, and if necessary even restart your computer without your being aware of it. There are four levels of Automatic Updates protection to which you can subscribe:...

5. MS DOS Versus PC DOS
With modern PCs having a very high level of standardization and compatibility, today it is easy to see how Microsoft can market complete packaged operating systems that will install and work unmodified on practically any PC you can purchase or build. Without the standardization and compatibility we have come to depend on, different specific "flavors" of a given operating system would be required for specific different hardware. That is exactly how things were back in the early '80s when the IBM PC was introduced. Many o...

6. How to make your PC Available for Remote Desktop Connection
To use Remote Desktop to reach your computer from the Internet, both the computer and your Internet connection must always be up and running. In addition, you must be able to make connections from the outside world to your computer, so there are additional requirements: If you use dial-up Internet service, you'll need someone at home to establish the connection before you can connect to your computer. If you use cable or DSL Internet service, you must either have a static IP address ass...

7. How to Update DirectX ~ Advantages
Although most Windows applications place fairly low demands on the display system, putting up fairly static displays and updating them relatively infrequently, interactive games and video displays are very graphics intensive. Game players pay big bucks for fps, or frames per second, which is a measure of how fast the hardware and software can generate new images as the scene changes and objects move. Under about 30fps, the image flickers and motion is noticeably jerky. Beyond 30fps, faster updates aren't noticeable, and the e...

8. Using Simple File Sharing in Windows
Although most home users are typically happy letting anyone at any computer read or modify any file, business users need to restrict access to files with payroll, personnel, and proprietary information. Windows XP and its predecessors, Windows NT and Windows 2000, were primarily designed for business use, so they require usernames and passwords for identification, and have a security system that lets computer owners restrict access to sensitive files on a user-by-user and file-by-file basis on each computer. Unfortunate...