Apple Macintosh Personal Computers

The computer program written to describe and implement the mathematical model was run on an APPLE Macintosh personal computer. A listing of the program is not included due to limitations of space. However, sample results obtained from the program for the particular design problem considered in this project are given in Table G4. 

Apple Computer Corporation s Macintosh personal computer is also gaining popularity in the chemical/pharmaceutical industry. However, the availability of software is not as great as for the IBM PC. 

A rigorous mathematical model was developed for this system using the correlations and data presented in Refs. Al and A2. The model enabled the sizing of the column and the optimization of tray spacing. It was run on the APPLE Macintosh (512K) personal computer. 

Graphical simulations were performed using the graphing calculator function on an Apple Macintosh PowerPC personal computer. 

Mac is released Apple introduces the Macintosh, a low-cost, plug-and-play personal computer with a user-friendly graphic interface. 

The 68000 was the first 16-b microprocessor to incorporate 32-b internal registers. This asset allowed its selection by designers who set out to port sophisticated operating systems to desktop computers. In some ways, the 68000 was ahead of its time. If IBM had chosen the 68000 series as the core chip for its personal computers, the present state-of-the-art of the desktop machine would be radically different. The 68000 was chosen by Apple for its Macintosh computers. Other computer manufacturers, including Amiga and Atari chose it for its flexibility and its large internal registers. 

Like many others, I worked on mainframe computers in the 1970s, cursing their inflexibility on a frequent basis. The first personal computer I used (in 1979) was a Commodore PET, which used audio cassettes for data storage. The IBM PC was introduced in 1981 but required the user to be fluent in the Disk Operating System (DOS) computer language. DOS was an early Microsoft development, but it was very clumsy. I remember the first time I used an Apple Macintosh in 1984. You switched it on and it just worked. I remember thinking, This is what computers should be like )... 

The software for traversing the Web is called a browser. The earliest of these were Mosaic and Netscape Navigator. Both were free and became widely used. Microsoft s Internet Explorer is a more recent entry. Browsers run on UNIX workstations, personal computers, and Apple Macintosh computers (it has been estimated that because Macs have enjoyed popularity among scientists, these machines have been the most used platform for authoring Web documents). 

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