The VALET-Plus, a VMEbus Based Microcomputer for Physics Applications

The VALET-Plus is a modular VMEbus based microcomputer system developed at CERN for use in applications such as the development and testing of electronics, equipment control and data acquisition. First released in 1985, more than 100 VALET-Plus systems are used today in 14 countries. The system will be described with particular emphasis on the SPIDER data acquisition package which offers both real time programming, using an interactive language, and fast data collection at rates of more than 1000 formatted events per second.