BATCH SYSTEM
- In computing, system for processing data with little or no operator intervention. Batches of data are prepared in advance to be processed during regular ‘runs’ (for example, each night). This allows efficient use of the computer and is well suited to applications of a repetitive nature, such bulk file format conversion, as a company payroll, or the production of utility bills.
MULTIPROGRAMMED SYSTEM
- It's an OS which keeps several jobs(programs) in memory at a time .The operating system picks and begins to execute one of the jobs in the memory. Eventually the job may have to wait for some task like a tape to be mounted,... Or an input output operation to be complete.In a multiprogrammed OS the OS is not idle it's simply switch to another job and executes it .As there is always some jobs to execute , the CPU will never be idle.
TIME-SHARING SYSTEM
- Time-sharing is sharing a computing resource among many users by multitasking. Its introduction in the 1960s, and emergence as the prominent model of computing in the 1970s, represents a major historical shift in the history of computing. By allowing a large number of users to interact simultaneously on a single computer, time-sharing dramatically lowered the cost of providing computing, while at the same time making the computing experience much more interactive.
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