A short computer program that is permanently resident or easily loaded into a computer,whose execution brings another,larger program,such as an operating system or its loader,into memory.

• 一段短的计算机程序，它常驻计算机或很容易装入计算机中。引导程序的执行能把另一个较大的程序如操作系统或其装入程序引入到内存中。