OOperating Systems Capabilities: Multiprogramming. Multitas king TRADITIONAL SINGLE- MULTIPROGRAMMING PROGRAM SYSTEM ENVIRONMENT PROGRAM 1 PROGRAM 2 PROGRAM 1 9zu z PROGRAM 3 UNUSED MEMORY UNUSED MEMORYHUANG Lihua, Fudan University Operating Systems Capabilities: Multiprogramming, Multitasking OPERATING SYSTEM UNUSED MEMORY PROGRAM 1 TRADITIONAL SINGLE￾PROGRAM SYSTEM OPERATING SYSTEM UNUSED MEMORY PROGRAM 1 PROGRAM 2 PROGRAM 3 MULTIPROGRAMMING ENVIRONMENT