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Showing posts with the label mac os

Multitasking or switching

I can recall the first time I used a HP UNIX computer at De Montfort University back in 1991. The screens were huge at 21" where for back then both these machines and screens would have cost thousands of pounds. The workstations themselves had a RISC processor and 32mb of ram and a hard drive. Previously I had used a PC with Windows 3, an Atari ST and Apple MAC. All except the atari could run multiple applications concurrently but unless you had enough memory on the PC, like the apple mac it would task switch. This meant the application in the foreground would run and other applications in the background would sit and wait until they were brought to the front to continue processing. Windows had a 386 enhanced mode which would allow mutlitasking and you could set the priority times for dos applications. The HP UNIX boxes at university could multitask properly with all of the applications. I could be compiling, on IRC, doing FTP downloads, emailing and possibly some text editing all