A programmable read-only memory microchip (PROM) serves to store the initial start-up program for a computer system and is built to withstand the conditions present in outer space.

可编程只读存储芯片用于存储计算机系统的初始启动程序，它被设计成可以承受目前外太空的环境状况。

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Boot. A small routine, read into main memory when the computer is turned on, which reads the rest of the operating system into memory. See also initial program load.

一小段程序。每次开机就自动地读入内存，然后，由它把操作系统的其余部分读入内存。可参阅初始化程序的装入。

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