QUIZ 1 Part 3 (M1S1) Flashcards
in a computer system, the operating system and accompanying software influence the behavior of the system. output specifications determine what and how much input is needed to keep the system balance;
Control
Control in a dynamic system is achieved by (BLANK)
Feedback
measures output against a standard in some form of cybernetic procedure that includes communication and control.
Feedback
may be a positive or negative, routing or informational. positive (Blank) reinforces the performance of the system. it is routing in nature.
Feedback
Negative (BLANK) generally provides the controller with information for action. in system analysis, (BLANK) is important in different ways;
Feedback
is the “suprasystem” within which an organization operates. it is the source of external elements that impinge on the system.
Environment
in fact, it often determines how a system must function. for example, the organization’s (BLANK), consisting of vendors, competitors and others may provide constraints and consequently, influence the actual performance of the business
Environment
a system should be defined by its (BLANK) the limits that identified its components, processes and interrelationship when it interfaces with another system.
Boundaries
each system has (BLANK) that determines its sphere of influence and control.
boundaries
Types of Systems (3)
- Physical or Abstract
- Open or Closed
- “man made” information system
are tangible entities that may be static or dynamic in operation.
Physical System
a programmed computer is a (BLANK). data, program, output, and applications change as the user’s demands or the priority of the information requested changes;
Dynamic System
are non-physical entities or conceptual that may be formulas, representation or model of a real system.
Abstract System
has many interfaces with its environment. it permits interaction across its boundary; it receives input from and delivers output to the outsides.
Open System
is isolated from environmental influences;
in reality a completely (BLACK) is rare. in systems analysis, organizations, applications and computers are invariably open, dynamic systems influenced by their environment.
Closed system
