There are three main components:
1.control programs
2.sytem service programs
3.utility programs
CONTROL PROGRAMS
A. Control Programs
control & maintain the operation of computer
1. Initial program loader (IPL)
Program in the form of firmware (software stored in ROM)
Computer ON, then electronic chip is automatically activated & IPL read the boot sector routine (BSR), reside in the primary memory
B. System Service Program
Support control programs
Divided into three portions
Linkage Editor
Librarian
Input/Output control system
C. Utility Programs
e.g. MS-DOS : Fdisk, FORMAT, ATTRIB, BACKUP, FIND
It depends what type of system you are talking about.If it is technical system it only has hardaware and software.Examples of technical systems are:Radio,TV,PC... If you are talking about Socio-Technical System that it has hardware,software,process and procedures.Most importantly Socio-Technical systems have a knowladge of why they are used and have humans as a operators. For example book publishing system is a socio-technical sstem, govermental system is socio-technical system...
A criticism control framework is one where an estimation of the yield of the procedure is taken, gone to a controller which makes sense of what do, and afterward a sign from the controller is gone through the actuator into a procedure data. A consistent data stream circle exists through the procedure, estimation, controller and actuator pieces and it is known as a criticism circle.
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