• In a serial processing operating system, only one job can be done in computer memory and it remains there till it is executed.
  • After completion of the job, the next job is entered in a serial fashion.
  • In this system, memory management is very simple because the whole memory space is allocated to the job or program.
Early operating system or Serial processing operating system.
  • In the serial processing operating system, the CPU remains idle most of the time because the CPU is very fast as compared to I/O devices.

ADVANTAGE

  • Resource management is very easy.
  • Resource allocation is very easy.

DISADVANTAGE

  • CPU remains ideal most of the time.
  • Very slow.
  • The waiting time for a job is more.