An operating system such as MS-DOS can load additional device drivers, such as CD-ROM drivers, but needs all of the hardware drivers already loaded at startup.
Operating Systems: Microsoft has been making operating systems since 1979 and has spent 28 years perfecting MS-DOS and Windows NT, the frameworks that Windows have been built around.
On the install/uninstall tab, click Old Window 3.x/MS-DOS System Files, and then click remove
MS-DOS要求鍵入生*難懂的指令，所以微軟着手研發新的具有更爲簡易*作介面的*作系統。
Along with some programmer friends, Pajitnov soon began work porting the game to the MS-DOS platform.
集成的編輯器，閃電般的編譯器加上低廉的價格使之變得不可抵抗，Pascal編程了爲MS-DOS編寫小程序的首選語言。
*作系統：微軟自1979年起就已經在生產*作系統，它花了28年時間完善MS-DOS和WindowsNT，讓這種架構方式深入人心。
You are running a version of MS-DOS earlier than 5.0
它包括一套介面相似的簡單應用程序（畫圖、終端和時鐘），以及一個稱爲MS-DOS管理的檔案管理器。
Application programmers perforce learned how to program the video display, keyboard, and mouse directly because neither MS-DOS nor the system BIOS did so adequately.
