摘要: This paper describes a timed, multithreaded object modeling notation for specifying real-time, concurrent, and reactive systems. The Timed Communicating Object Z (TCOZ) builds on Z's strengths in complex data algorithms, CSP's process control real-time interactions. TCOZ Is novel that it includes timing primitives, properly separates data/algorithm issues supports the of true concurrency. is particularly well-suited systems whose components have their own thread control. expressiveness demonstrated by case study multilift system operates real-time.