Buffer

This is a small amount of data that is stored for a short amount of time, typically in the computer's memory (RAM). The purpose of a buffer is to hold data right before it is used. For example, when you download an audio or video file from the Internet, it may load the first 20% of it into a buffer and then begin to play. While the clip plays back, the computer continually downloads the rest of the clip and stores it in the buffer. Because the clip is being played from the buffer, not directly from the Internet, there is less of a chance that the audio or video will stall or skip when there is network congestion.

EBCDIC

Extended Binary Coded Decimal Interchange Code. It is also called the Extended ASCII Code, as it adds an eighth digit to the normal seven-digit code.

Pet

The Commodore PET (Personal Electronic Transactor) is an early (circa 1977-1980, around the same time as the Apple][) home computer featuring a ROM-based BASIC developed by Microsoft which it uses as a default "OS". It is based on the 65xx family of processors and is the precursor to the VIC-20.